Bug 1542963 - Fix most flake8 issues in python/mozbuild/mozbuild/* r=firefox-build-system-reviewers,chmanchester

Leaving one fix for an explicit review.

Lint python/mozbuild/{mozbuild,mozpack}. r=#build

Differential Revision: https://phabricator.services.mozilla.com/D26641

--HG--
extra : moz-landing-system : lando

.flake8

@@ -92,6 +92,8 @@ ignore =
 
 per-file-ignores =
     ipc/ipdl/*: F403, F405
+    # cpp_eclipse has a lot of multi-line embedded XML which exceeds line length
+    python/mozbuild/mozbuild/backend/cpp_eclipse.py: E501
     testing/firefox-ui/**/__init__.py: F401
     testing/marionette/**/__init__.py: F401
     testing/mozharness/configs/*: E124, E127, E128, E131, E231, E261, E265, E266, E501, W391

python/mozbuild/mozbuild/action/buildlist.py

@@ -37,7 +37,7 @@ def addEntriesToListFile(listFile, entries):
         with open(listFile, 'wb') as f:
             f.write("\n".join(sorted(existing))+"\n")
     finally:
-        lock = None
+        del lock  # Explicitly release the lock_file to free it
 
 
 def main(args):

python/mozbuild/mozbuild/action/download_wpt_manifest.py

@@ -4,7 +4,6 @@
 
 # This action is used to generate the wpt manifest
 
-import os
 import sys
 
 import buildconfig

python/mozbuild/mozbuild/action/dumpsymbols.py

@@ -59,8 +59,9 @@ def dump_symbols(target, tracking_file, count_ctors=False):
     if objcopy:
         os.environ['OBJCOPY'] = objcopy
 
-    args = ([buildconfig.substs['PYTHON'], os.path.join(buildconfig.topsrcdir, 'toolkit',
-                                                        'crashreporter', 'tools', 'symbolstore.py')] +
+    args = ([buildconfig.substs['PYTHON'],
+             os.path.join(buildconfig.topsrcdir, 'toolkit',
+                          'crashreporter', 'tools', 'symbolstore.py')] +
             sym_store_args +
             ['-s', buildconfig.topsrcdir, dump_syms_bin, os.path.join(buildconfig.topobjdir,
                                                                       'dist',

python/mozbuild/mozbuild/action/exe_7z_archive.py

@@ -31,8 +31,10 @@ def archive_exe(pkg_dir, tagfile, sfx_package, package, use_upx):
         except BuildEnvironmentNotFoundException:
             # configure hasn't been run, just use the default
             sevenz = '7z'
-        subprocess.check_call([sevenz, 'a', '-r', '-t7z', mozpath.join(tmpdir, 'app.7z'), '-mx',
-                               '-m0=BCJ2', '-m1=LZMA:d25', '-m2=LZMA:d19', '-m3=LZMA:d19', '-mb0:1', '-mb0s1:2', '-mb0s2:3'])
+        subprocess.check_call([
+            sevenz, 'a', '-r', '-t7z', mozpath.join(tmpdir, 'app.7z'), '-mx',
+            '-m0=BCJ2', '-m1=LZMA:d25', '-m2=LZMA:d19', '-m3=LZMA:d19', '-mb0:1',
+            '-mb0s1:2', '-mb0s2:3'])
 
         with open(package, 'wb') as o:
             for i in [final_sfx, tagfile, mozpath.join(tmpdir, 'app.7z')]:

python/mozbuild/mozbuild/action/file_generate.py

@@ -69,7 +69,7 @@ def main(argv):
         with FileAvoidWrite(args.output_file, mode='rb') as output:
             try:
                 ret = module.__dict__[method](output, *args.additional_arguments, **kwargs)
-            except:
+            except Exception:
                 # Ensure that we don't overwrite the file if the script failed.
                 output.avoid_writing_to_file()
                 raise

python/mozbuild/mozbuild/action/generate_searchjson.py

@@ -25,7 +25,7 @@ else:
 
 
 def validateDefault(key):
-    if (not key in searchinfo["default"]):
+    if key not in searchinfo["default"]:
         print >>sys.stderr, "Error: Missing default %s in list.json" % (key)
         sys.exit(1)
 
@@ -35,13 +35,16 @@ validateDefault("visibleDefaultEngines")
 
 # If the selected locale doesn't have a searchDefault,
 # use the global one.
-if not "searchDefault" in localeSearchInfo["default"]:
+if "searchDefault" not in localeSearchInfo["default"]:
     localeSearchInfo["default"]["searchDefault"] = searchinfo["default"]["searchDefault"]
 
 # If the selected locale doesn't have a searchOrder,
 # use the global one if present.
 # searchOrder is NOT required.
-if not "searchOrder" in localeSearchInfo["default"] and "searchOrder" in searchinfo["default"]:
+if (
+    "searchOrder" not in localeSearchInfo["default"]
+    and "searchOrder" in searchinfo["default"]
+):
     localeSearchInfo["default"]["searchOrder"] = searchinfo["default"]["searchOrder"]
 
 # If we have region overrides, enumerate through them
@@ -63,7 +66,8 @@ if "regionOverrides" in searchinfo:
                 visibleDefaultEngines)
             for i, engine in enumerate(localeSearchInfo[region]["visibleDefaultEngines"]):
                 if engine in regionOverrides[region]:
-                    localeSearchInfo[region]["visibleDefaultEngines"][i] = regionOverrides[region][engine]
+                    localeSearchInfo[region]["visibleDefaultEngines"][i] = \
+                        regionOverrides[region][engine]
 
 output.write(json.dumps(localeSearchInfo, ensure_ascii=False).encode('utf8'))
 

python/mozbuild/mozbuild/action/generate_suggestedsites.py

@@ -38,13 +38,9 @@ import os
 from mozbuild.dotproperties import (
     DotProperties,
 )
-from mozbuild.util import (
-    FileAvoidWrite,
-)
 from mozpack.files import (
     FileFinder,
 )
-import mozpack.path as mozpath
 
 
 def merge_properties(paths):
@@ -92,7 +88,8 @@ def main(output, *args, **kwargs):
     properties = merge_properties(sources)
 
     # Keep these two in sync.
-    image_url_template = 'android.resource://%s/drawable/suggestedsites_{name}' % opts.android_package_name
+    image_url_template = \
+        'android.resource://%s/drawable/suggestedsites_{name}' % opts.android_package_name
     drawables_template = 'drawable*/suggestedsites_{name}.*'
 
     # Load properties corresponding to each site name and define their
@@ -121,7 +118,9 @@ def main(output, *args, **kwargs):
             else:
                 if opts.verbose:
                     print("Found {len} drawables in '{resources}' for '{name}': {matches}"
-                          .format(len=len(matches), resources=resources, name=name, matches=matches))
+                          .format(len=len(matches), resources=resources,
+                                  name=name, matches=matches)
+                          )
 
     # We want the lists to be ordered for reproducibility.  Each list has a
     # "default" JSON list item which will be extended by the properties read.

python/mozbuild/mozbuild/action/langpack_manifest.py

@@ -26,7 +26,6 @@ from mozpack.chrome.manifest import (
 )
 from mozbuild.configure.util import Version
 from mozbuild.preprocessor import Preprocessor
-import buildconfig
 
 
 def write_file(path, content):

python/mozbuild/mozbuild/action/package_fennec_apk.py

@@ -11,7 +11,6 @@ from __future__ import absolute_import, print_function
 import argparse
 import buildconfig
 import os
-import subprocess
 import sys
 
 from mozpack.copier import Jarrer

python/mozbuild/mozbuild/action/package_generated_sources.py

@@ -5,8 +5,6 @@
 from __future__ import absolute_import, print_function, unicode_literals
 
 import argparse
-import json
-import os.path
 import sys
 
 import buildconfig
@@ -30,7 +28,8 @@ def main(argv):
         else:
             entry_abspath = mozpath.abspath(entry[1])
         if not entry_abspath.startswith(objdir_abspath):
-            print("Warning: omitting generated source [%s] from archive" % entry_abspath, file=sys.stderr)
+            print("Warning: omitting generated source [%s] from archive" % entry_abspath,
+                  file=sys.stderr)
             return False
         return True
 

python/mozbuild/mozbuild/action/process_define_files.py

@@ -10,7 +10,6 @@ import re
 import sys
 from buildconfig import topsrcdir, topobjdir
 from mozbuild.backend.configenvironment import PartialConfigEnvironment
-from mozbuild.util import FileAvoidWrite
 import mozpack.path as mozpath
 
 
@@ -51,12 +50,12 @@ def process_define_file(output, input):
                             raise Exception(
                                 '`#define ALLDEFINES` is not allowed in a '
                                 'CONFIGURE_DEFINE_FILE')
-                        # WebRTC files like to define WINVER and _WIN32_WINNT
-                        # via the command line, which raises a mass of macro
-                        # redefinition warnings.  Just handle those macros
-                        # specially here.
 
                         def define_for_name(name, val):
+                            """WebRTC files like to define WINVER and _WIN32_WINNT
+                            via the command line, which raises a mass of macro
+                            redefinition warnings.  Just handle those macros
+                            specially here."""
                             define = "#define {name} {val}".format(name=name, val=val)
                             if name in ('WINVER', '_WIN32_WINNT'):
                                 return '#if !defined({name})\n{define}\n#endif' \

python/mozbuild/mozbuild/action/tooltool.py

@@ -979,7 +979,7 @@ def _authorize(req, auth_file):
         try:
             auth_file_content = json.loads(auth_file_content)
             is_taskcluster_auth = True
-        except:
+        except Exception:
             pass
 
     if is_taskcluster_auth:

python/mozbuild/mozbuild/action/xpccheck.py

@@ -42,8 +42,11 @@ def verifyDirectory(initests, directory):
                 break
 
         if not found:
-            print >>sys.stderr, "TEST-UNEXPECTED-FAIL | xpccheck | test %s is missing from test manifest %s!" % (
-                name, os.path.join(directory, 'xpcshell.ini'))
+            print >>sys.stderr, ("TEST-UNEXPECTED-FAIL | xpccheck | test "
+                                 "%s is missing from test manifest %s!") % (
+                name,
+                os.path.join(directory, 'xpcshell.ini'),
+            )
             sys.exit(1)
 
 
@@ -64,8 +67,9 @@ def verifyIniFile(initests, directory):
                 break
 
         if not found:
-            print >>sys.stderr, "TEST-UNEXPECTED-FAIL | xpccheck | found %s in xpcshell.ini and not in directory '%s'" % (
-                name, directory)
+            print >>sys.stderr, ("TEST-UNEXPECTED-FAIL | xpccheck | found "
+                                 "%s in xpcshell.ini and not in directory '%s'"
+                                 ) % (name, directory)
             sys.exit(1)
 
 
@@ -74,7 +78,6 @@ def main(argv):
         print >>sys.stderr, "Usage: xpccheck.py <topsrcdir> <directory> [<directory> ...]"
         sys.exit(1)
 
-    topsrcdir = argv[0]
     for d in argv[1:]:
         # xpcshell-unpack is a copy of xpcshell sibling directory and in the Makefile
         # we copy all files (including xpcshell.ini from the sibling directory.

python/mozbuild/mozbuild/action/xpidl-process.py

@@ -13,8 +13,6 @@ import argparse
 import os
 import sys
 
-from io import BytesIO
-
 from xpidl import jsonxpt
 from buildconfig import topsrcdir
 from xpidl.header import print_header

python/mozbuild/mozbuild/analyze/graph.py

@@ -92,7 +92,7 @@ class Graph(object):
             ret = self.query_arg('SELECT id FROM node \
                 WHERE dir=? AND name=?', (nodeid, part)).fetchone()
             # fetchone should be ok bc dir and and name combo is unique
-            if ret == None:
+            if ret is None:
                 print ("\nCould not find id number for '%s'" % filepath)
                 return None
             nodeid = ret[0]

python/mozbuild/mozbuild/artifacts.py

@@ -338,9 +338,11 @@ class AndroidArtifactJob(ArtifactJob):
                 if not filename.endswith('.gz'):
                     continue
 
-                # Uncompress "libxul.so/D3271457813E976AE7BF5DAFBABABBFD0/libxul.so.dbg.gz" into "libxul.so.dbg".
+                # Uncompress "libxul.so/D3271457813E976AE7BF5DAFBABABBFD0/libxul.so.dbg.gz"
+                # into "libxul.so.dbg".
                 #
-                # After `settings append target.debug-file-search-paths /path/to/topobjdir/dist/crashreporter-symbols`,
+                # After running `settings append target.debug-file-search-paths $file`,
+                # where file=/path/to/topobjdir/dist/crashreporter-symbols,
                 # Android Studio's lldb (7.0.0, at least) will find the ELF debug symbol files.
                 #
                 # There are other paths that will work but none seem more desireable.  See
@@ -349,7 +351,8 @@ class AndroidArtifactJob(ArtifactJob):
                 destpath = mozpath.join('crashreporter-symbols', basename)
                 self.log(logging.INFO, 'artifact',
                          {'destpath': destpath},
-                         'Adding uncompressed ELF debug symbol file {destpath} to processed archive')
+                         'Adding uncompressed ELF debug symbol file '
+                         '{destpath} to processed archive')
                 writer.add(destpath.encode('utf-8'),
                            gzip.GzipFile(fileobj=reader[filename].uncompressed_data))
 
@@ -656,7 +659,8 @@ class CacheManager(object):
     Provide simple logging.
     '''
 
-    def __init__(self, cache_dir, cache_name, cache_size, cache_callback=None, log=None, skip_cache=False):
+    def __init__(self, cache_dir, cache_name, cache_size, cache_callback=None,
+                 log=None, skip_cache=False):
         self._skip_cache = skip_cache
         self._cache = pylru.lrucache(cache_size, callback=cache_callback)
         self._cache_filename = mozpath.join(cache_dir, cache_name + '-cache.pickle')
@@ -960,7 +964,8 @@ class Artifacts(object):
 There are no public revisions.
 This can happen if the repository is created from bundle file and never pulled
 from remote.  Please run `hg pull` and build again.
-see https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Source_Code/Mercurial/Bundles""")
+see https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Source_Code/Mercurial/Bundles\
+""")
 
         self.log(logging.INFO, 'artifact',
                  {'len': len(last_revs)},
@@ -1005,10 +1010,11 @@ see https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Source_Code
             yield candidate_pushheads[rev], rev
 
         if not count:
-            raise Exception('Could not find any candidate pushheads in the last {num} revisions.\n'
-                            'Search started with {rev}, which must be known to Mozilla automation.\n\n'
-                            'see https://developer.mozilla.org/en-US/docs/Artifact_builds'.format(
-                                rev=last_revs[0], num=NUM_PUSHHEADS_TO_QUERY_PER_PARENT))
+            raise Exception(
+                'Could not find any candidate pushheads in the last {num} revisions.\n'
+                'Search started with {rev}, which must be known to Mozilla automation.\n\n'
+                'see https://developer.mozilla.org/en-US/docs/Artifact_builds'.format(
+                    rev=last_revs[0], num=NUM_PUSHHEADS_TO_QUERY_PER_PARENT))
 
     def find_pushhead_artifacts(self, task_cache, job, tree, pushhead):
         try:
@@ -1073,7 +1079,8 @@ see https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Source_Code
                 shutil.copyfileobj(zf.open(info), fh)
                 file_existed, file_updated = fh.close()
                 self.log(logging.INFO, 'artifact',
-                         {'updating': 'Updating' if file_updated else 'Not updating', 'filename': n},
+                         {'updating': 'Updating' if file_updated else 'Not updating',
+                          'filename': n},
                          '{updating} {filename}')
                 if not file_existed or file_updated:
                     # Libraries and binaries may need to be marked executable,

python/mozbuild/mozbuild/backend/common.py

@@ -33,7 +33,6 @@ from mozbuild.frontend.data import (
     GnProjectData,
     HostLibrary,
     HostGeneratedSources,
-    HostRustLibrary,
     IPDLCollection,
     LocalizedPreprocessedFiles,
     LocalizedFiles,
@@ -53,7 +52,6 @@ from mozbuild.preprocessor import Preprocessor
 from mozpack.chrome.manifest import parse_manifest_line
 
 from mozbuild.util import (
-    group_unified_files,
     mkdir,
 )
 
@@ -205,8 +203,9 @@ class CommonBackend(BuildBackend):
         if len(self._idl_manager.modules):
             self._write_rust_xpidl_summary(self._idl_manager)
             self._handle_idl_manager(self._idl_manager)
-            self._handle_generated_sources(mozpath.join(self.environment.topobjdir, 'dist/include/%s.h' % stem)
-                                           for stem in self._idl_manager.idl_stems())
+            self._handle_generated_sources(
+                mozpath.join(self.environment.topobjdir, 'dist/include/%s.h' % stem)
+                for stem in self._idl_manager.idl_stems())
 
         for config in self._configs:
             self.backend_input_files.add(config.source)
@@ -392,7 +391,7 @@ class CommonBackend(BuildBackend):
                 includeTemplate += (
                     '\n'
                     '#if defined(_WINDOWS_) && !defined(MOZ_WRAPPED_WINDOWS_H)\n'
-                    '#pragma message("wrapper failure reason: " MOZ_WINDOWS_WRAPPER_DISABLED_REASON)\n'
+                    '#pragma message("wrapper failure reason: " MOZ_WINDOWS_WRAPPER_DISABLED_REASON)\n'  # noqa
                     '#error "%(cppfile)s included unwrapped windows.h"\n'
                     "#endif")
             includeTemplate += (

python/mozbuild/mozbuild/backend/configenvironment.py

@@ -49,7 +49,7 @@ class BuildConfig(object):
 
         # cache the compiled code as it can be reused
         # we cache it the first time, or if the file changed
-        if not path in code_cache or code_cache[path][0] != mtime:
+        if path not in code_cache or code_cache[path][0] != mtime:
             # Add config.status manually to sys.modules so it gets picked up by
             # iter_modules_in_path() for automatic dependencies.
             mod = ModuleType('config.status')
@@ -148,10 +148,13 @@ class ConfigEnvironment(object):
         self.bin_suffix = self.substs.get('BIN_SUFFIX', '')
 
         global_defines = [name for name in self.defines
-                          if not name in self.non_global_defines]
-        self.substs['ACDEFINES'] = ' '.join(['-D%s=%s' % (name,
-                                                          shell_quote(self.defines[name]).replace('$', '$$'))
-                                             for name in sorted(global_defines)])
+                          if name not in self.non_global_defines]
+        self.substs["ACDEFINES"] = ' '.join(
+            [
+                '-D%s=%s' % (name, shell_quote(self.defines[name]).replace('$', '$$'))
+                for name in sorted(global_defines)
+            ]
+        )
 
         def serialize(name, obj):
             if isinstance(obj, StringTypes):
@@ -159,10 +162,21 @@ class ConfigEnvironment(object):
             if isinstance(obj, Iterable):
                 return ' '.join(obj)
             raise Exception('Unhandled type %s for %s', type(obj), str(name))
-        self.substs['ALLSUBSTS'] = '\n'.join(sorted(['%s = %s' % (name,
-                                                                  serialize(name, self.substs[name])) for name in self.substs if self.substs[name]]))
-        self.substs['ALLEMPTYSUBSTS'] = '\n'.join(sorted(['%s =' % name
-                                                          for name in self.substs if not self.substs[name]]))
+        self.substs['ALLSUBSTS'] = '\n'.join(
+            sorted([
+                '%s = %s' % (
+                    name,
+                    serialize(name, self.substs[name])
+                    )
+                for name in self.substs if self.substs[name]
+                ])
+            )
+        self.substs['ALLEMPTYSUBSTS'] = '\n'.join(
+            sorted([
+                '%s =' % name
+                for name in self.substs if not self.substs[name]
+                ])
+            )
 
         self.substs = ReadOnlyDict(self.substs)
 

python/mozbuild/mozbuild/backend/cpp_eclipse.py

@@ -6,18 +6,14 @@ from __future__ import absolute_import
 
 import errno
 import glob
-import random
 import os
 import shutil
 import subprocess
-import types
 from xml.sax.saxutils import quoteattr
-import xml.etree.ElementTree as ET
 from .common import CommonBackend
 
 from ..frontend.data import (
     ComputedFlags,
-    Defines,
 )
 from mozbuild.base import ExecutionSummary
 
@@ -195,7 +191,7 @@ class CppEclipseBackend(CommonBackend):
         self._write_noindex()
 
         try:
-            process = subprocess.check_call(
+            subprocess.check_call(
                              ["eclipse", "-application", "-nosplash",
                               "org.eclipse.cdt.managedbuilder.core.headlessbuild",
                               "-data", self._workspace_dir, "-importAll", self._project_dir])
@@ -382,8 +378,8 @@ PROJECT_TEMPLATE = """<?xml version="1.0" encoding="UTF-8"?>
                 <buildCommand>
                         <name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
                         <triggers></triggers>
-			<arguments>
-			</arguments>
+            <arguments>
+            </arguments>
                 </buildCommand>
         </buildSpec>
         <natures>
@@ -481,7 +477,7 @@ CPROJECT_TEMPLATE_HEADER = """<?xml version="1.0" encoding="UTF-8" standalone="n
                                         <folderInfo id="0.1674256904." name="/" resourcePath="">
                                                 <toolChain id="cdt.managedbuild.toolchain.gnu.cross.exe.debug.1276586933" name="Cross GCC" superClass="cdt.managedbuild.toolchain.gnu.cross.exe.debug">
                                                         <targetPlatform archList="all" binaryParser="" id="cdt.managedbuild.targetPlatform.gnu.cross.710759961" isAbstract="false" osList="all" superClass="cdt.managedbuild.targetPlatform.gnu.cross"/>
-							<builder arguments="--log-no-times build" buildPath="@PROJECT_TOPSRCDIR@" command="@MACH_COMMAND@" enableCleanBuild="false" incrementalBuildTarget="binaries" id="org.eclipse.cdt.build.core.settings.default.builder.1437267827" keepEnvironmentInBuildfile="false" name="Gnu Make Builder" superClass="org.eclipse.cdt.build.core.settings.default.builder"/>
+                            <builder arguments="--log-no-times build" buildPath="@PROJECT_TOPSRCDIR@" command="@MACH_COMMAND@" enableCleanBuild="false" incrementalBuildTarget="binaries" id="org.eclipse.cdt.build.core.settings.default.builder.1437267827" keepEnvironmentInBuildfile="false" name="Gnu Make Builder" superClass="org.eclipse.cdt.build.core.settings.default.builder"/>
                                                 </toolChain>
                                         </folderInfo>
 """
@@ -495,9 +491,9 @@ CPROJECT_TEMPLATE_FILEINFO = """                                        <fileInf
                                         </fileInfo>
 """
 CPROJECT_TEMPLATE_FOOTER = """
-					<sourceEntries>
-						<entry excluding="**/lib*|**/third_party/|tree/*.xcodeproj/|tree/.cargo/|tree/.vscode/|tree/build/|tree/extensions/|tree/gfx/angle/|tree/gfx/cairo/|tree/gfx/skia/skia/|tree/intl/icu/|tree/js/|tree/media/|tree/modules/freetype2|tree/modules/pdfium/|tree/netwerk/|tree/netwerk/sctp|tree/netwerk/srtp|tree/nsprpub/lib|tree/nsprpub/pr/src|tree/other-licenses/|tree/parser/|tree/python/|tree/security/nss/|tree/tools/" flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name=""/>
-					</sourceEntries>
+                    <sourceEntries>
+                        <entry excluding="**/lib*|**/third_party/|tree/*.xcodeproj/|tree/.cargo/|tree/.vscode/|tree/build/|tree/extensions/|tree/gfx/angle/|tree/gfx/cairo/|tree/gfx/skia/skia/|tree/intl/icu/|tree/js/|tree/media/|tree/modules/freetype2|tree/modules/pdfium/|tree/netwerk/|tree/netwerk/sctp|tree/netwerk/srtp|tree/nsprpub/lib|tree/nsprpub/pr/src|tree/other-licenses/|tree/parser/|tree/python/|tree/security/nss/|tree/tools/" flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name=""/>
+                    </sourceEntries>
                                 </configuration>
                         </storageModule>
                         <storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
@@ -539,38 +535,38 @@ WORKSPACE_LANGUAGE_SETTINGS_TEMPLATE = """<?xml version="1.0" encoding="UTF-8" s
 
 LANGUAGE_SETTINGS_TEMPLATE_HEADER = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <project>
-	<configuration id="0.1674256904" name="Default">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
-				<language id="org.eclipse.cdt.core.g++">
+    <configuration id="0.1674256904" name="Default">
+        <extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+            <provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+                <language id="org.eclipse.cdt.core.g++">
 """
 
-LANGUAGE_SETTINGS_TEMPLATE_DIR_HEADER = """					<resource project-relative-path="@RELATIVE_PATH@">
-						<entry kind="includeFile" name="@PREINCLUDE_FILE_PATH@">
-							<flag value="LOCAL"/>
-						</entry>
+LANGUAGE_SETTINGS_TEMPLATE_DIR_HEADER = """                 <resource project-relative-path="@RELATIVE_PATH@">
+                        <entry kind="includeFile" name="@PREINCLUDE_FILE_PATH@">
+                            <flag value="LOCAL"/>
+                        </entry>
 """
 
-LANGUAGE_SETTINGS_TEMPLATE_DIR_INCLUDE = """						<entry kind="includePath" name="@INCLUDE_PATH@">
-							<flag value="LOCAL"/>
-						</entry>
+LANGUAGE_SETTINGS_TEMPLATE_DIR_INCLUDE = """                        <entry kind="includePath" name="@INCLUDE_PATH@">
+                            <flag value="LOCAL"/>
+                        </entry>
 """
 
-LANGUAGE_SETTINGS_TEMPLATE_DIR_DEFINE = """						<entry kind="macro" name="@NAME@" value=@VALUE@/>
+LANGUAGE_SETTINGS_TEMPLATE_DIR_DEFINE = """                        <entry kind="macro" name="@NAME@" value=@VALUE@/>
 """
 
-LANGUAGE_SETTINGS_TEMPLATE_DIR_FOOTER = """					</resource>
+LANGUAGE_SETTINGS_TEMPLATE_DIR_FOOTER = """                    </resource>
 """
 
-LANGUAGE_SETTINGS_TEMPLATE_FOOTER = """				</language>
-			</provider>
-			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-859273372804152468" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="@COMPILER_FLAGS@ -E -P -v -dD &quot;${INPUTS}&quot; -std=c++11" prefer-non-shared="true" store-entries-with-project="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-		</extension>
-	</configuration>
+LANGUAGE_SETTINGS_TEMPLATE_FOOTER = """                </language>
+                </provider>
+            <provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-859273372804152468" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="@COMPILER_FLAGS@ -E -P -v -dD &quot;${INPUTS}&quot; -std=c++11" prefer-non-shared="true" store-entries-with-project="true">
+                <language-scope id="org.eclipse.cdt.core.gcc"/>
+                <language-scope id="org.eclipse.cdt.core.g++"/>
+            </provider>
+            <provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+        </extension>
+    </configuration>
 </project>
 """
 

python/mozbuild/mozbuild/backend/fastermake.py

@@ -210,7 +210,13 @@ class FasterMakeBackend(CommonBackend, PartialBackend):
                 rule = mk.create_rule([merge]).add_dependencies(
                     [ref_file, l10n_file] + python_deps)
                 rule.add_commands(
-                    ['$(PYTHON) -m mozbuild.action.l10n_merge --output {} --ref-file {} --l10n-file {}'.format(merge, ref_file, l10n_file)])
+                    [
+                        '$(PYTHON) -m mozbuild.action.l10n_merge '
+                        '--output {} --ref-file {} --l10n-file {}'.format(
+                            merge, ref_file, l10n_file
+                        )
+                    ]
+                )
                 # Add a dummy rule for the l10n file since it might not exist.
                 mk.create_rule([l10n_file])
 
@@ -222,7 +228,8 @@ class FasterMakeBackend(CommonBackend, PartialBackend):
                                  'install_%s' % base.replace('/', '_'))) as fh:
                 install_manifest.write(fileobj=fh)
 
-        # For artifact builds only, write a single unified manifest for consumption by |mach watch|.
+        # For artifact builds only, write a single unified manifest
+        # for consumption by |mach watch|.
         if self.environment.is_artifact_build:
             unified_manifest = InstallManifest()
             for base, install_manifest in self._install_manifests.iteritems():

python/mozbuild/mozbuild/backend/mach_commands.py

@@ -6,7 +6,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 
 import argparse
 import os
-import sys
 import subprocess
 import which
 
@@ -58,10 +57,12 @@ class MachCommands(MachCommandBase):
 
         if ide == 'eclipse':
             eclipse_workspace_dir = self.get_eclipse_workspace_path()
-            process = subprocess.check_call(['eclipse', '-data', eclipse_workspace_dir])
+            subprocess.check_call(['eclipse', '-data', eclipse_workspace_dir])
         elif ide == 'visualstudio':
             visual_studio_workspace_dir = self.get_visualstudio_workspace_path()
-            process = subprocess.check_call(['explorer.exe', visual_studio_workspace_dir])
+            subprocess.check_call(
+                ['explorer.exe', visual_studio_workspace_dir]
+            )
 
     def get_eclipse_workspace_path(self):
         from mozbuild.backend.cpp_eclipse import CppEclipseBackend

python/mozbuild/mozbuild/backend/recursivemake.py

@@ -51,7 +51,6 @@ from ..frontend.data import (
     HostSources,
     InstallationTarget,
     JARManifest,
-    Library,
     Linkable,
     LocalInclude,
     LocalizedFiles,
@@ -59,7 +58,6 @@ from ..frontend.data import (
     ObjdirFiles,
     ObjdirPreprocessedFiles,
     PerSourceFlag,
-    PgoGenerateOnlySources,
     Program,
     RustLibrary,
     HostSharedLibrary,
@@ -313,7 +311,7 @@ class RecursiveMakeTraversal(object):
                 if start_node != '':
                     deps[start_node] = prev_nodes
                 prev_nodes = (start_node,)
-            if not start_node in self._traversal:
+            if start_node not in self._traversal:
                 return prev_nodes
             parallel_nodes = []
             for node in parallel:
@@ -339,7 +337,7 @@ class RecursiveMakeTraversal(object):
         current, parallel, sequential = self.call_filter(start, filter)
         if current is not None:
             yield start
-        if not start in self._traversal:
+        if start not in self._traversal:
             return
         for node in parallel:
             for n in self.traverse(node, filter):
@@ -599,12 +597,15 @@ class RecursiveMakeBackend(CommonBackend):
                 backend_file.write('GARBAGE += %s\n' % stub_file)
                 backend_file.write('EXTRA_MDDEPEND_FILES += %s\n' % dep_file)
 
-                backend_file.write("""{stub}: {script}{inputs}{backend}{force}
+                backend_file.write((
+                    """{stub}: {script}{inputs}{backend}{force}
 \t$(REPORT_BUILD)
-\t$(call py_action,file_generate,{locale}{script} {method} {output} $(MDDEPDIR)/{dep_file} {stub}{inputs}{flags})
+\t$(call py_action,file_generate,{locale}{script} """  # wrap for E501
+                    """{method} {output} $(MDDEPDIR)/{dep_file} {stub}{inputs}{flags})
 \t@$(TOUCH) $@
 
-""".format(stub=stub_file,
+""").format(
+                    stub=stub_file,
                     output=first_output,
                     dep_file=dep_file,
                     inputs=' ' + ' '.join(inputs) if inputs else '',
@@ -617,7 +618,9 @@ class RecursiveMakeBackend(CommonBackend):
                     force=force,
                     locale='--locale=$(AB_CD) ' if obj.localized else '',
                     script=obj.script,
-                    method=obj.method))
+                    method=obj.method
+                    )
+                )
 
         elif isinstance(obj, JARManifest):
             self._no_skip['libs'].add(backend_file.relobjdir)
@@ -813,8 +816,10 @@ class RecursiveMakeBackend(CommonBackend):
             # Directories containing rust compilations don't generally depend
             # on other directories in the tree, so putting them first here will
             # start them earlier in the build.
-            rule.add_dependencies(chain((r for r in roots if mozpath.dirname(r) in self._rust_dirs),
-                                        (r for r in roots if mozpath.dirname(r) not in self._rust_dirs)))
+            rule.add_dependencies(
+                chain((r for r in roots if mozpath.dirname(r) in self._rust_dirs),
+                      (r for r in roots if mozpath.dirname(r) not in self._rust_dirs))
+                )
             for target, deps in sorted(graph.items()):
                 if deps:
                     rule = root_deps_mk.create_rule([target])
@@ -897,9 +902,10 @@ class RecursiveMakeBackend(CommonBackend):
                                              all_sources))
 
         if include_curdir_build_rules:
-            makefile.add_statement('\n'
-                                   '# Make sometimes gets confused between "foo" and "$(CURDIR)/foo".\n'
-                                   '# Help it out by explicitly specifiying dependencies.')
+            makefile.add_statement(
+                '\n'
+                '# Make sometimes gets confused between "foo" and "$(CURDIR)/foo".\n'
+                '# Help it out by explicitly specifiying dependencies.')
             makefile.add_statement('all_absolute_unified_files := \\\n'
                                    '  $(addprefix $(CURDIR)/,$(%s))'
                                    % unified_files_makefile_variable)
@@ -1063,10 +1069,10 @@ class RecursiveMakeBackend(CommonBackend):
             return (mozpath.relpath(d.translated, base) for d in dirs)
 
         if obj.dirs:
-            fh.write('DIRS := %s\n' % ' '.join(
-                relativize(backend_file.objdir, obj.dirs)))
-            self._traversal.add(backend_file.relobjdir,
-                                dirs=relativize(self.environment.topobjdir, obj.dirs))
+            fh.write('DIRS := %s\n' % ' '.join(relativize(backend_file.objdir, obj.dirs)))
+            self._traversal.add(
+                backend_file.relobjdir, dirs=relativize(self.environment.topobjdir, obj.dirs)
+            )
 
         # The directory needs to be registered whether subdirectories have been
         # registered or not.
@@ -1091,7 +1097,9 @@ class RecursiveMakeBackend(CommonBackend):
             backend_file.write('FINAL_TARGET = $(DEPTH)/%s\n' % (obj.target))
         else:
             backend_file.write(
-                'FINAL_TARGET = $(if $(XPI_NAME),$(DIST)/xpi-stage/$(XPI_NAME),$(DIST)/bin)$(DIST_SUBDIR:%=/%)\n')
+                'FINAL_TARGET = $(if $(XPI_NAME),$(DIST)/xpi-stage/$(XPI_NAME),'
+                '$(DIST)/bin)$(DIST_SUBDIR:%=/%)\n'
+                )
 
         if not obj.enabled:
             backend_file.write('NO_DIST_INSTALL := 1\n')
@@ -1106,8 +1114,7 @@ class RecursiveMakeBackend(CommonBackend):
             self._install_manifests['dist_include'].add_optional_exists('%s.h' % stem)
 
         for module in manager.modules:
-            build_files.add_optional_exists(mozpath.join('.deps',
-                                                         '%s.pp' % module))
+            build_files.add_optional_exists(mozpath.join('.deps', '%s.pp' % module))
 
         modules = manager.modules
         xpt_modules = sorted(modules.keys())
@@ -1297,8 +1304,9 @@ class RecursiveMakeBackend(CommonBackend):
 
     def _process_computed_flags(self, computed_flags, backend_file):
         for var, flags in computed_flags.get_flags():
-            backend_file.write('COMPUTED_%s += %s\n' % (var,
-                                                        ' '.join(make_quote(shell_quote(f)) for f in flags)))
+            backend_file.write(
+                'COMPUTED_%s += %s\n' % (var,
+                                         ' '.join(make_quote(shell_quote(f)) for f in flags)))
 
     def _process_non_default_target(self, libdef, target_name, backend_file):
         backend_file.write("%s:: %s\n" % (libdef.output_category, target_name))
@@ -1364,7 +1372,6 @@ class RecursiveMakeBackend(CommonBackend):
             return os.path.normpath(mozpath.join(mozpath.relpath(lib.objdir, obj.objdir),
                                                  name))
 
-        topobjdir = mozpath.normsep(obj.topobjdir)
         # This will create the node even if there aren't any linked libraries.
         build_target = self._build_target_for_obj(obj)
         self._compile_graph[build_target]
@@ -1517,8 +1524,8 @@ class RecursiveMakeBackend(CommonBackend):
                         if f.startswith('/') or isinstance(f, AbsolutePath):
                             basepath, wild = os.path.split(f.full_path)
                             if '*' in basepath:
-                                raise Exception("Wildcards are only supported in the filename part of "
-                                                "srcdir-relative or absolute paths.")
+                                raise Exception("Wildcards are only supported in the filename part"
+                                                " of srcdir-relative or absolute paths.")
 
                             install_manifest.add_pattern_link(basepath, wild, path)
                         else:
@@ -1740,8 +1747,9 @@ class RecursiveMakeBackend(CommonBackend):
                                       unified_files_makefile_variable='CPPSRCS')
 
         # Preprocessed ipdl files are generated in ipdl_dir.
-        mk.add_statement('IPDLDIRS := %s %s' % (ipdl_dir, ' '.join(sorted(set(mozpath.dirname(p)
-                                                                              for p in sorted_static_ipdl_sources)))))
+        mk.add_statement(
+            'IPDLDIRS := %s %s' % (ipdl_dir, ' '.join(sorted(set(mozpath.dirname(p)
+                                                      for p in sorted_static_ipdl_sources)))))
 
         with self._write_file(mozpath.join(ipdl_dir, 'ipdlsrcs.mk')) as ipdls:
             mk.dump(ipdls, removal_guard=False)

python/mozbuild/mozbuild/backend/tup.py

@@ -12,12 +12,9 @@ import sys
 import shutil
 
 import mozpack.path as mozpath
-from mozbuild import shellutil
 from mozbuild.analyze.graph import Graph
 from mozbuild.analyze.hg import Report
 from mozbuild.base import MozbuildObject
-from mozbuild.backend.base import PartialBackend, HybridBackend
-from mozbuild.backend.recursivemake import RecursiveMakeBackend
 from mozbuild.mozconfig import MozconfigLoader
 from mozbuild.shellutil import quote as shell_quote
 from mozbuild.util import OrderedDefaultDict
@@ -59,7 +56,6 @@ from ..frontend.data import (
 )
 from ..util import (
     FileAvoidWrite,
-    expand_variables,
 )
 from ..frontend.context import (
     AbsolutePath,
@@ -147,7 +143,8 @@ class BackendTupfile(object):
         else:
             caret_text = flags
 
-        self.write(': %(inputs)s%(extra_inputs)s |> %(display)s%(cmd)s |> %(outputs)s%(output_group)s\n' % {
+        self.write((': %(inputs)s%(extra_inputs)s |> %(display)s%(cmd)s |> '
+                    '%(outputs)s%(output_group)s\n') % {
             'inputs': ' '.join(inputs),
             'extra_inputs': ' | ' + ' '.join(extra_inputs) if extra_inputs else '',
             'display': '^%s^ ' % caret_text if caret_text else '',
@@ -272,7 +269,8 @@ class TupBackend(CommonBackend):
         self._rust_cmds = set()
 
         self._built_in_addons = set()
-        self._built_in_addons_file = 'dist/bin/browser/chrome/browser/content/browser/built_in_addons.json'
+        self._built_in_addons_file = \
+            'dist/bin/browser/chrome/browser/content/browser/built_in_addons.json'
 
     def _output_group(self, label):
         if label:
@@ -671,11 +669,13 @@ class TupBackend(CommonBackend):
 
         for objdir, backend_file in sorted(self._backend_files.items()):
             backend_file.gen_sources_rules([self._installed_files])
-            for var, gen_method in ((backend_file.shared_lib, self._gen_shared_library),
-                                    (backend_file.static_lib and backend_file.static_lib.no_expand_lib,
-                                     self._gen_static_library),
-                                    (backend_file.programs, self._gen_programs),
-                                    (backend_file.host_programs, self._gen_host_programs)):
+            for var, gen_method in (
+                (backend_file.shared_lib, self._gen_shared_library),
+                (backend_file.static_lib and backend_file.static_lib.no_expand_lib,
+                 self._gen_static_library),
+                (backend_file.programs, self._gen_programs),
+                (backend_file.host_programs, self._gen_host_programs)
+            ):
                 if var:
                     backend_file.export_shell()
                     backend_file.export_icecc()
@@ -688,8 +688,9 @@ class TupBackend(CommonBackend):
                 pass
 
         with self._write_file(mozpath.join(self.environment.topobjdir, 'Tuprules.tup')) as fh:
-            acdefines_flags = ' '.join(['-D%s=%s' % (name, shell_quote(value))
-                                        for (name, value) in sorted(self.environment.acdefines.iteritems())])
+            acdefines_flags = ' '.join(
+                ['-D%s=%s' % (name, shell_quote(value))
+                 for (name, value) in sorted(self.environment.acdefines.iteritems())])
             # TODO: AB_CD only exists in Makefiles at the moment.
             acdefines_flags += ' -DAB_CD=en-US'
 
@@ -808,13 +809,11 @@ class TupBackend(CommonBackend):
 
         # Enable link-time optimization for release builds.
         cargo_library_flags = []
-        if (not obj.config.substs.get('DEVELOPER_OPTIONS') and
-            not obj.config.substs.get('MOZ_DEBUG_RUST')):
+        if not obj.config.substs.get('DEVELOPER_OPTIONS') and not obj.config.substs.get(
+            'MOZ_DEBUG_RUST'
+        ):
             cargo_library_flags += ['-C', 'lto']
 
-        rust_build_home = mozpath.join(self.environment.topobjdir,
-                                       'toolkit/library/rust')
-
         def display_name(invocation):
             output_str = ''
             if invocation['outputs']:
@@ -868,7 +867,9 @@ class TupBackend(CommonBackend):
 
             invocation['full-deps'] = set()
 
-            if os.path.basename(invocation['program']) in ['build-script-build', 'build-script-main']:
+            if os.path.basename(invocation['program']) in [
+                'build-script-build', 'build-script-main'
+            ]:
                 out_dir = invocation['env']['OUT_DIR']
                 for output in cargo_extra_outputs.get(shortname, []):
                     outputs.append(os.path.join(out_dir, output))
@@ -1118,8 +1119,9 @@ class TupBackend(CommonBackend):
                         if f.startswith('/') or isinstance(f, AbsolutePath):
                             basepath, wild = os.path.split(f.full_path)
                             if '*' in basepath:
-                                raise Exception("Wildcards are only supported in the filename part of "
-                                                "srcdir-relative or absolute paths.")
+                                raise Exception(
+                                    "Wildcards are only supported in the filename part of "
+                                    "srcdir-relative or absolute paths.")
 
                             # TODO: This is only needed for Windows, so we can
                             # skip this for now.
@@ -1148,7 +1150,6 @@ class TupBackend(CommonBackend):
 
                             finder = FileFinder(prefix)
                             for p, _ in finder.find(f.full_path[len(prefix):]):
-                                install_dir = prefix[len(obj.srcdir) + 1:]
                                 output = p
                                 if f.target_basename and '*' not in f.target_basename:
                                     output = mozpath.join(f.target_basename, output)
@@ -1160,7 +1161,8 @@ class TupBackend(CommonBackend):
                             f.full_path, output=f.target_basename, output_group=output_group)
                 else:
                     if (self.environment.is_artifact_build and
-                        any(mozpath.match(f.target_basename, p) for p in self._compile_env_gen_files)):
+                        any(mozpath.match(f.target_basename, p)
+                            for p in self._compile_env_gen_files)):
                         # If we have an artifact build we never would have generated this file,
                         # so do not attempt to install it.
                         continue

python/mozbuild/mozbuild/backend/visualstudio.py

@@ -10,7 +10,6 @@ from __future__ import absolute_import, unicode_literals
 import errno
 import os
 import re
-import types
 import uuid
 
 from xml.dom import getDOMImplementation
@@ -148,16 +147,17 @@ class VisualStudioBackend(CommonBackend):
             if target != 'full':
                 command += ' %s' % target
 
-            project_id = self._write_vs_project(out_proj_dir, basename, target,
-                                                build_command=command,
-                                                clean_command='$(SolutionDir)\\mach.bat build clean')
+            project_id = self._write_vs_project(
+                out_proj_dir, basename, target, build_command=command,
+                clean_command='$(SolutionDir)\\mach.bat build clean')
 
             projects[basename] = (project_id, basename, target)
 
         # A project that can be used to regenerate the visual studio projects.
         basename = 'target_vs'
-        project_id = self._write_vs_project(out_proj_dir, basename, 'visual-studio',
-                                            build_command='$(SolutionDir)\\mach.bat build-backend -b VisualStudio')
+        project_id = self._write_vs_project(
+            out_proj_dir, basename, 'visual-studio',
+            build_command='$(SolutionDir)\\mach.bat build-backend -b VisualStudio')
         projects[basename] = (project_id, basename, 'visual-studio')
 
         # Write out a shared property file with common variables.
@@ -239,14 +239,14 @@ class VisualStudioBackend(CommonBackend):
 
             basename = '%s_%s' % (prefix, item)
 
-            project_id = self._write_vs_project(out_dir, basename, item,
-                                                includes=includes,
-                                                forced_includes=[
-                                                    '$(TopObjDir)\\dist\\include\\mozilla-config.h'],
-                                                defines=defines,
-                                                headers=headers,
-                                                sources=sources,
-                                                debugger=debugger)
+            project_id = self._write_vs_project(
+                out_dir, basename, item,
+                includes=includes,
+                forced_includes=['$(TopObjDir)\\dist\\include\\mozilla-config.h'],
+                defines=defines,
+                headers=headers,
+                sources=sources,
+                debugger=debugger)
 
             projects[basename] = (project_id, basename, item)
 
@@ -462,8 +462,8 @@ class VisualStudioBackend(CommonBackend):
         project_id = get_id(basename.encode('utf-8'))
 
         with self._write_file(os.path.join(out_dir, root), mode='rb') as fh:
-            project_id, name = VisualStudioBackend.write_vs_project(fh,
-                                                                    self._version, project_id, name, **kwargs)
+            project_id, name = VisualStudioBackend.write_vs_project(
+                fh, self._version, project_id, name, **kwargs)
 
         with self._write_file(os.path.join(out_dir, '%s.user' % root), mode='rb') as fh:
             fh.write('<?xml version="1.0" encoding="utf-8"?>\r\n')

python/mozbuild/mozbuild/base.py

@@ -37,7 +37,6 @@ from .mozconfig import (
 )
 from .pythonutil import find_python3_executable
 from .util import (
-    ReadOnlyNamespace,
     memoize,
     memoized_property,
 )
@@ -179,9 +178,10 @@ class MozbuildObject(ProcessExecutionMixin):
             topobjdir = mozpath.normsep(os.path.normpath(topobjdir))
 
             if topsrcdir == topobjdir:
-                raise BadEnvironmentException('The object directory appears '
-                                              'to be the same as your source directory (%s). This build '
-                                              'configuration is not supported.' % topsrcdir)
+                raise BadEnvironmentException(
+                    'The object directory appears '
+                    'to be the same as your source directory (%s). This build '
+                    'configuration is not supported.' % topsrcdir)
 
         # If we can't resolve topobjdir, oh well. We'll figure out when we need
         # one.
@@ -256,11 +256,13 @@ class MozbuildObject(ProcessExecutionMixin):
     @property
     def virtualenv_manager(self):
         if self._virtualenv_manager is None:
-            self._virtualenv_manager = VirtualenvManager(self.topsrcdir,
-                                                         self.topobjdir, os.path.join(
-                                                             self.topobjdir, '_virtualenvs', 'init'),
-                                                         sys.stdout, os.path.join(self.topsrcdir, 'build',
-                                                                                  'virtualenv_packages.txt'))
+            self._virtualenv_manager = VirtualenvManager(
+                self.topsrcdir,
+                self.topobjdir,
+                os.path.join(self.topobjdir, '_virtualenvs', 'init'),
+                sys.stdout,
+                os.path.join(self.topsrcdir, 'build', 'virtualenv_packages.txt')
+                )
 
         return self._virtualenv_manager
 
@@ -622,8 +624,8 @@ class MozbuildObject(ProcessExecutionMixin):
                 self.run_process([notifier, '--app-name=Mozilla Build System',
                                   'Mozilla Build System', msg], ensure_exit_code=False)
         except Exception as e:
-            self.log(logging.WARNING, 'notifier-failed', {'error':
-                                                          e.message}, 'Notification center failed: {error}')
+            self.log(logging.WARNING, 'notifier-failed',
+                     {'error': e.message}, 'Notification center failed: {error}')
 
     def _ensure_objdir_exists(self):
         if os.path.isdir(self.statedir):
@@ -868,8 +870,9 @@ class MachCommandBase(MozbuildObject):
             detect_virtualenv_mozinfo = getattr(context,
                                                 'detect_virtualenv_mozinfo')
         try:
-            dummy = MozbuildObject.from_environment(cwd=context.cwd,
-                                                    detect_virtualenv_mozinfo=detect_virtualenv_mozinfo)
+            dummy = MozbuildObject.from_environment(
+                cwd=context.cwd,
+                detect_virtualenv_mozinfo=detect_virtualenv_mozinfo)
             topsrcdir = dummy.topsrcdir
             topobjdir = dummy._topobjdir
             if topobjdir:

python/mozbuild/mozbuild/codecoverage/chrome_map.py

@@ -2,11 +2,9 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-from collections import defaultdict
 import json
 import os
 import re
-import urlparse
 
 from mach.config import ConfigSettings
 from mach.logging import LoggingManager
@@ -120,9 +118,11 @@ class ChromeMapBackend(CommonBackend):
         #  A map from url prefixes to objdir directories:
         #  { "chrome://mozapps/content/": [ "dist/bin/chrome/toolkit/content/mozapps" ], ... }
         #  A map of overrides.
-        #  A map from objdir paths to sourcedir paths, and an object storing mapping information for preprocessed files:
+        #  A map from objdir paths to sourcedir paths, and an object storing mapping
+        #    information for preprocessed files:
         #  { "dist/bin/browser/chrome/browser/content/browser/aboutSessionRestore.js":
-        #    [ "$topsrcdir/browser/components/sessionstore/content/aboutSessionRestore.js", {} ], ... }
+        #    [ "$topsrcdir/browser/components/sessionstore/content/aboutSessionRestore.js", {} ],
+        #    ... }
         #  An object containing build configuration information.
         outputfile = os.path.join(self.environment.topobjdir, 'chrome-map.json')
         with self._write_file(outputfile) as fh:

python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py

@@ -66,8 +66,9 @@ class LcovRecord(object):
         # Re-calculate summaries after generating or splitting a record.
         self.function_count = len(self.functions.keys())
         # Function records may have moved between files, so filter here.
-        self.function_exec_counts = {fn_name: count for fn_name, count in viewitems(self.function_exec_counts)
-                                     if fn_name in self.functions.values()}
+        self.function_exec_counts = {
+            fn_name: count for fn_name, count in viewitems(self.function_exec_counts)
+            if fn_name in self.functions.values()}
         self.covered_function_count = len([c for c in self.function_exec_counts.values() if c])
         self.line_count = len(self.lines)
         self.covered_line_count = len([c for c, _ in self.lines.values() if c])
@@ -575,10 +576,10 @@ class UrlFinder(object):
 
             if app_name in url:
                 if omnijar_name in url:
-                    # e.g. file:///home/worker/workspace/build/application/firefox/omni.ja!/components/MainProcessSingleton.js
+                    # e.g. file:///home/worker/workspace/build/application/firefox/omni.ja!/components/MainProcessSingleton.js  # noqa
                     parts = url_obj.path.split(omnijar_name + '!', 1)
                 elif '.xpi!' in url:
-                    # e.g. file:///home/worker/workspace/build/application/firefox/browser/features/e10srollout@mozilla.org.xpi!/bootstrap.js
+                    # e.g. file:///home/worker/workspace/build/application/firefox/browser/features/e10srollout@mozilla.org.xpi!/bootstrap.js  # noqa
                     parts = url_obj.path.split('.xpi!', 1)
                 else:
                     # We don't know how to handle this jar: path, so return it to the
@@ -586,8 +587,10 @@ class UrlFinder(object):
                     return url_obj.path, None
 
                 dir_parts = parts[0].rsplit(app_name + '/', 1)
-                url = mozpath.normpath(mozpath.join(self.topobjdir, 'dist',
-                                                    'bin', dir_parts[1].lstrip('/'), parts[1].lstrip('/')))
+                url = mozpath.normpath(
+                    mozpath.join(self.topobjdir, 'dist',
+                                 'bin', dir_parts[1].lstrip('/'), parts[1].lstrip('/'))
+                    )
             elif '.xpi!' in url:
                 # This matching mechanism is quite brittle and based on examples seen in the wild.
                 # There's no rule to match the XPI name to the path in dist/xpi-stage.
@@ -619,7 +622,8 @@ class UrlFinder(object):
 class LcovFileRewriter(object):
     # Class for partial parses of LCOV format and rewriting to resolve urls
     # and preprocessed file lines.
-    def __init__(self, chrome_map_path, appdir='dist/bin/browser/', gredir='dist/bin/', extra_chrome_manifests=[]):
+    def __init__(self, chrome_map_path, appdir='dist/bin/browser/',
+                 gredir='dist/bin/', extra_chrome_manifests=[]):
         self.url_finder = UrlFinder(chrome_map_path, appdir, gredir, extra_chrome_manifests)
         self.pp_rewriter = RecordRewriter()
 
@@ -640,9 +644,11 @@ class LcovFileRewriter(object):
                 return None
 
             source_file, pp_info = res
-            # We can't assert that the file exists here, because we don't have the source checkout available
-            # on test machines. We can bring back this assertion when bug 1432287 is fixed.
-            # assert os.path.isfile(source_file), "Couldn't find mapped source file %s at %s!" % (url, source_file)
+            # We can't assert that the file exists here, because we don't have the source
+            # checkout available on test machines. We can bring back this assertion when
+            # bug 1432287 is fixed.
+            # assert os.path.isfile(source_file), "Couldn't find mapped source file %s at %s!" % (
+            #     url, source_file)
 
             found_valid[0] = True
 
@@ -666,28 +672,44 @@ class LcovFileRewriter(object):
 
 
 def main():
-    parser = ArgumentParser(description="Given a set of gcov .info files produced "
-                            "by spidermonkey's code coverage, re-maps file urls "
-                            "back to source files and lines in preprocessed files "
-                            "back to their original locations.")
-    parser.add_argument("--chrome-map-path", default="chrome-map.json",
-                        help="Path to the chrome-map.json file.")
-    parser.add_argument("--app-dir", default="dist/bin/browser/",
-                        help="Prefix of the appdir in use. This is used to map "
-                             "urls starting with resource:///. It may differ by "
-                             "app, but defaults to the valid value for firefox.")
-    parser.add_argument("--gre-dir", default="dist/bin/",
-                        help="Prefix of the gre dir in use. This is used to map "
-                             "urls starting with resource://gre. It may differ by "
-                             "app, but defaults to the valid value for firefox.")
-    parser.add_argument("--output-suffix", default=".out",
-                        help="The suffix to append to output files.")
-    parser.add_argument("--extra-chrome-manifests", nargs='+',
-                        help="Paths to files containing extra chrome registration.")
-    parser.add_argument("--output-file", default="",
-                        help="The output file where the results are merged. Leave empty to make the rewriter not merge files.")
-    parser.add_argument("files", nargs='+',
-                        help="The set of files to process.")
+    parser = ArgumentParser(
+        description="Given a set of gcov .info files produced "
+        "by spidermonkey's code coverage, re-maps file urls "
+        "back to source files and lines in preprocessed files "
+        "back to their original locations."
+    )
+    parser.add_argument(
+        "--chrome-map-path", default="chrome-map.json", help="Path to the chrome-map.json file."
+    )
+    parser.add_argument(
+        "--app-dir",
+        default="dist/bin/browser/",
+        help="Prefix of the appdir in use. This is used to map "
+        "urls starting with resource:///. It may differ by "
+        "app, but defaults to the valid value for firefox.",
+    )
+    parser.add_argument(
+        "--gre-dir",
+        default="dist/bin/",
+        help="Prefix of the gre dir in use. This is used to map "
+        "urls starting with resource://gre. It may differ by "
+        "app, but defaults to the valid value for firefox.",
+    )
+    parser.add_argument(
+        "--output-suffix", default=".out", help="The suffix to append to output files."
+    )
+    parser.add_argument(
+        "--extra-chrome-manifests",
+        nargs='+',
+        help="Paths to files containing extra chrome registration.",
+    )
+    parser.add_argument(
+        "--output-file",
+        default="",
+        help="The output file where the results are merged. Leave empty to make the rewriter not "
+        "merge files.",
+    )
+    parser.add_argument("files", nargs='+', help="The set of files to process.")
 
     args = parser.parse_args()
 

python/mozbuild/mozbuild/codecoverage/packager.py

@@ -5,6 +5,7 @@
 from __future__ import absolute_import, print_function
 
 import argparse
+import errno
 import sys
 import json
 import buildconfig

python/mozbuild/mozbuild/compilation/codecomplete.py

@@ -6,8 +6,6 @@
 
 from __future__ import absolute_import
 
-import os
-
 from mach.decorators import (
     CommandArgument,
     CommandProvider,

python/mozbuild/mozbuild/compilation/database.py

@@ -13,11 +13,8 @@ from mozbuild.frontend.data import (
     Sources,
     GeneratedSources,
     DirectoryTraversal,
-    Linkable,
-    LocalInclude,
     PerSourceFlag,
     VariablePassthru,
-    SimpleProgram,
 )
 from mozbuild.shellutil import (
     quote as shell_quote,

python/mozbuild/mozbuild/compilation/util.py

@@ -3,7 +3,6 @@
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
-from mozbuild import shellutil
 
 
 def check_top_objdir(topobjdir):

python/mozbuild/mozbuild/config_status.py

@@ -10,7 +10,6 @@ from __future__ import absolute_import, print_function
 
 import logging
 import os
-import subprocess
 import sys
 import time
 

python/mozbuild/mozbuild/configure/util.py

@@ -155,7 +155,7 @@ class ConfigureOutputHandler(logging.Handler):
             stream.flush()
         except (KeyboardInterrupt, SystemExit, IOError):
             raise
-        except:
+        except Exception:
             self.handleError(record)
 
     @contextmanager

python/mozbuild/mozbuild/controller/building.py

@@ -6,7 +6,6 @@ from __future__ import absolute_import, unicode_literals
 
 import errno
 import getpass
-import glob
 import io
 import json
 import logging
@@ -305,7 +304,7 @@ class BuildMonitor(MozbuildObject):
         try:
             warning = self._warnings_collector.process_line(line)
             message = line
-        except:
+        except Exception:
             pass
 
         return BuildOutputResult(warning, False, message)
@@ -902,7 +901,10 @@ class CCacheStats(object):
         return int(numeric * unit)
 
     def hit_rate_message(self):
-        return 'ccache (direct) hit rate: {:.1%}; (preprocessed) hit rate: {:.1%}; miss rate: {:.1%}'.format(*self.hit_rates())
+        return ('ccache (direct) hit rate: {:.1%}; (preprocessed) hit rate: {:.1%};'
+                ' miss rate: {:.1%}'.format(
+                    *self.hit_rates()
+                ))
 
     def hit_rates(self):
         direct = self._values['cache_hit_direct']
@@ -1144,12 +1146,13 @@ class BuildDriver(MozbuildObject):
                     # could potentially be fixed if the build monitor were more
                     # intelligent about encountering undefined state.
                     no_build_status = b'1' if make_dir is not None else b''
-                    status = self._run_make(directory=make_dir, target=make_target,
-                                            line_handler=output.on_line, log=False, print_directory=False,
-                                            ensure_exit_code=False, num_jobs=jobs, silent=not verbose,
-                                            append_env={
-                                                b'NO_BUILDSTATUS_MESSAGES': no_build_status},
-                                            keep_going=keep_going)
+                    status = self._run_make(
+                        directory=make_dir, target=make_target,
+                        line_handler=output.on_line, log=False, print_directory=False,
+                        ensure_exit_code=False, num_jobs=jobs, silent=not verbose,
+                        append_env={
+                            b'NO_BUILDSTATUS_MESSAGES': no_build_status},
+                        keep_going=keep_going)
 
                     if status != 0:
                         break
@@ -1299,8 +1302,10 @@ class BuildDriver(MozbuildObject):
                     print('To take your build for a test drive, run: |mach run|')
                 app = self.substs['MOZ_BUILD_APP']
                 if app in ('browser', 'mobile/android'):
-                    print('For more information on what to do now, see '
-                          'https://developer.mozilla.org/docs/Developer_Guide/So_You_Just_Built_Firefox')
+                    print(
+                        'For more information on what to do now, see '
+                        'https://developer.mozilla.org/docs/Developer_Guide/So_You_Just_Built_Firefox'  # noqa
+                    )
             except Exception:
                 # Ignore Exceptions in case we can't find config.status (such
                 # as when doing OSX Universal builds)

python/mozbuild/mozbuild/controller/clobber.py

@@ -95,7 +95,7 @@ class Clobberer(object):
                                  stdout=subprocess.PIPE,
                                  stderr=subprocess.STDOUT)
             return p.wait() == 1 and p.stdout.read().startswith('winrm')
-        except:
+        except Exception:
             return False
 
     def remove_objdir(self, full=True):

python/mozbuild/mozbuild/doctor.py

@@ -70,7 +70,7 @@ class Doctor(object):
                 denied = True
         if denied:
             print('run "mach doctor --fix" AS ADMIN to re-attempt fixing your system')
-        elif False:  # elif fixable:
+        elif False and fixable:  # elif fixable:  # 'and fixable' avoids flake8 error
             print('run "mach doctor --fix" as admin to attempt fixing your system')
         return int(not good)
 

python/mozbuild/mozbuild/dotproperties.py

@@ -78,7 +78,7 @@ class DotProperties:
                  if k.startswith(prefix) and '.' not in k[len(prefix):])
 
         for required_key in required_keys:
-            if not required_key in D:
+            if required_key not in D:
                 raise ValueError('Required key %s not present' % required_key)
 
         return D

python/mozbuild/mozbuild/faster_daemon.py

@@ -204,7 +204,7 @@ class Daemon(object):
 
             while True:
                 try:
-                    _watch_result = self.client.receive()
+                    self.client.receive()
 
                     changed = self.changed_files()
                     if not changed:
@@ -228,7 +228,7 @@ class Daemon(object):
 
                 except pywatchman.SocketTimeout:
                     # Let's check to see if we're still functional.
-                    _version = self.client.query('version')
+                    self.client.query('version')
 
         except pywatchman.CommandError as e:
             # Abstract away pywatchman errors.

python/mozbuild/mozbuild/frontend/context.py

@@ -1200,67 +1200,103 @@ SUBCONTEXTS = {cls.__name__: cls for cls in SUBCONTEXTS}
 #   (storage_type, input_types, docs)
 
 VARIABLES = {
-    'SOURCES': (ContextDerivedTypedListWithItems(Path, StrictOrderingOnAppendListWithFlagsFactory({'no_pgo': bool, 'flags': List})), list,
-                """Source code files.
+    'SOURCES': (
+        ContextDerivedTypedListWithItems(
+            Path,
+            StrictOrderingOnAppendListWithFlagsFactory(
+                {'no_pgo': bool, 'flags': List}
+                )
+            ),
+        list,
+        """Source code files.
 
         This variable contains a list of source code files to compile.
         Accepts assembler, C, C++, Objective C/C++.
-        """),
+        """
+        ),
 
-    'FILES_PER_UNIFIED_FILE': (int, int,
-                               """The number of source files to compile into each unified source file.
+    'FILES_PER_UNIFIED_FILE': (
+        int,
+        int,
+        """The number of source files to compile into each unified source file.
 
-        """),
+        """
+        ),
 
-    'IS_RUST_LIBRARY': (bool, bool,
-                        """Whether the current library defined by this moz.build is built by Rust.
+    'IS_RUST_LIBRARY': (
+        bool,
+        bool,
+        """Whether the current library defined by this moz.build is built by Rust.
 
         The library defined by this moz.build should have a build definition in
         a Cargo.toml file that exists in this moz.build's directory.
-        """),
+        """
+        ),
 
-    'RUST_LIBRARY_FEATURES': (List, list,
-                              """Cargo features to activate for this library.
+    'RUST_LIBRARY_FEATURES': (
+        List,
+        list,
+        """Cargo features to activate for this library.
 
         This variable should not be used directly; you should be using the
         RustLibrary template instead.
-        """),
+        """
+        ),
 
-    'RUST_LIBRARY_TARGET_DIR': (unicode, unicode,
-                                """Where CARGO_TARGET_DIR should point when compiling this library.  If
+    'RUST_LIBRARY_TARGET_DIR': (
+        unicode,
+        unicode,
+        """Where CARGO_TARGET_DIR should point when compiling this library.  If
         not set, it defaults to the current objdir.  It should be a relative path
         to the current objdir; absolute paths should not be used.
 
         This variable should not be used directly; you should be using the
         RustLibrary template instead.
-        """),
+        """
+        ),
 
-    'HOST_RUST_LIBRARY_FEATURES': (List, list,
-                                   """Cargo features to activate for this host library.
+    'HOST_RUST_LIBRARY_FEATURES': (
+        List,
+        list,
+        """Cargo features to activate for this host library.
 
         This variable should not be used directly; you should be using the
         HostRustLibrary template instead.
+        """
+        ),
+
+    'RUST_TESTS': (
+        TypedList(unicode),
+        list,
+        """Names of Rust tests to build and run via `cargo test`.
         """),
 
-    'RUST_TESTS': (TypedList(unicode), list,
-                   """Names of Rust tests to build and run via `cargo test`.
-        """),
+    'RUST_TEST_FEATURES': (
+        TypedList(unicode),
+        list,
+        """Cargo features to activate for RUST_TESTS.
+        """
+        ),
 
-    'RUST_TEST_FEATURES': (TypedList(unicode), list,
-                           """Cargo features to activate for RUST_TESTS.
-        """),
-
-    'UNIFIED_SOURCES': (ContextDerivedTypedList(SourcePath, StrictOrderingOnAppendList), list,
-                        """Source code files that can be compiled together.
+    'UNIFIED_SOURCES': (
+        ContextDerivedTypedList(
+            SourcePath,
+            StrictOrderingOnAppendList
+            ),
+        list,
+        """Source code files that can be compiled together.
 
         This variable contains a list of source code files to compile,
         that can be concatenated all together and built as a single source
         file. This can help make the build faster and reduce the debug info
         size.
-        """),
+        """
+        ),
 
-    'GENERATED_FILES': (GeneratedFilesList, list,
-                        """Generic generated files.
+    'GENERATED_FILES': (
+        GeneratedFilesList,
+        list,
+        """Generic generated files.
 
         This variable contains a list of files for the build system to
         generate at export time. The generation method may be declared
@@ -1308,10 +1344,13 @@ VARIABLES = {
         build, regardless of whether it is stale.  This is special to the
         RecursiveMake backend and intended for special situations only (e.g.,
         localization).  Please consult a build peer before using ``force``.
-        """),
+        """
+        ),
 
-    'DEFINES': (InitializedDefines, dict,
-                """Dictionary of compiler defines to declare.
+    'DEFINES': (
+        InitializedDefines,
+        dict,
+        """Dictionary of compiler defines to declare.
 
         These are passed in to the compiler as ``-Dkey='value'`` for string
         values, ``-Dkey=value`` for numeric values, or ``-Dkey`` if the
@@ -1336,17 +1375,23 @@ VARIABLES = {
                'MOZ_EXTENSIONS_DB_SCHEMA': 15,
                'DLL_SUFFIX': '".so"',
            })
-        """),
+        """
+        ),
 
-    'DELAYLOAD_DLLS': (List, list,
-                       """Delay-loaded DLLs.
+    'DELAYLOAD_DLLS': (
+        List,
+        list,
+        """Delay-loaded DLLs.
 
         This variable contains a list of DLL files which the module being linked
         should load lazily.  This only has an effect when building with MSVC.
-        """),
+        """
+        ),
 
-    'DIRS': (ContextDerivedTypedList(SourcePath), list,
-             """Child directories to descend into looking for build frontend files.
+    'DIRS': (
+        ContextDerivedTypedList(SourcePath),
+        list,
+        """Child directories to descend into looking for build frontend files.
 
         This works similarly to the ``DIRS`` variable in make files. Each str
         value in the list is the name of a child directory. When this file is
@@ -1357,10 +1402,13 @@ VARIABLES = {
         Values are relative paths. They can be multiple directory levels
         above or below. Use ``..`` for parent directories and ``/`` for path
         delimiters.
-        """),
+        """
+        ),
 
-    'HAS_MISC_RULE': (bool, bool,
-                      """Whether this directory should be traversed in the ``misc`` tier.
+    'HAS_MISC_RULE': (
+        bool,
+        bool,
+        """Whether this directory should be traversed in the ``misc`` tier.
 
         Many ``libs`` rules still exist in Makefile.in files. We highly prefer
         that these rules exist in the ``misc`` tier/target so that they can be
@@ -1373,7 +1421,8 @@ VARIABLES = {
         Please note that converting ``libs`` rules to the ``misc`` tier must
         be done with care, as there are many implicit dependencies that can
         break the build in subtle ways.
-        """),
+        """
+        ),
 
     'FINAL_TARGET_FILES': (ContextDerivedTypedHierarchicalStringList(Path), list,
                            """List of files to be installed into the application directory.
@@ -1680,23 +1729,35 @@ VARIABLES = {
         the Cargo.toml in the same directory.
         """),
 
-    'CONFIGURE_SUBST_FILES': (ContextDerivedTypedList(SourcePath, StrictOrderingOnAppendList), list,
-                              """Output files that will be generated using configure-like substitution.
+    'CONFIGURE_SUBST_FILES': (
+        ContextDerivedTypedList(
+            SourcePath,
+            StrictOrderingOnAppendList
+            ),
+        list,
+        """Output files that will be generated using configure-like substitution.
 
         This is a substitute for ``AC_OUTPUT`` in autoconf. For each path in this
         list, we will search for a file in the srcdir having the name
         ``{path}.in``. The contents of this file will be read and variable
         patterns like ``@foo@`` will be substituted with the values of the
         ``AC_SUBST`` variables declared during configure.
-        """),
+        """
+        ),
 
-    'CONFIGURE_DEFINE_FILES': (ContextDerivedTypedList(SourcePath, StrictOrderingOnAppendList), list,
-                               """Output files generated from configure/config.status.
+    'CONFIGURE_DEFINE_FILES': (
+        ContextDerivedTypedList(
+            SourcePath,
+            StrictOrderingOnAppendList
+            ),
+        list,
+        """Output files generated from configure/config.status.
 
         This is a substitute for ``AC_CONFIG_HEADER`` in autoconf. This is very
         similar to ``CONFIGURE_SUBST_FILES`` except the generation logic takes
         into account the values of ``AC_DEFINE`` instead of ``AC_SUBST``.
-        """),
+        """
+        ),
 
     'EXPORTS': (ContextDerivedTypedHierarchicalStringList(Path), list,
                 """List of files to be exported, and in which subdirectories.
@@ -1920,7 +1981,7 @@ VARIABLES = {
         """),
 
     'TELEMETRY_TESTS_CLIENT_MANIFESTS': (ManifestparserManifestList, list,
-        """List of manifest files defining telemetry client tests.
+                                         """List of manifest files defining telemetry client tests.
         """),
 
     # The following variables are used to control the target of installed files.
@@ -2426,23 +2487,31 @@ SPECIAL_VARIABLES = {
        ``$(FINAL_TARGET)/components/``.
         """),
 
-    'EXTRA_PP_COMPONENTS': (lambda context: context['FINAL_TARGET_PP_FILES'].components._strings, list,
-                            """Javascript XPCOM files.
+    'EXTRA_PP_COMPONENTS': (
+        lambda context: context['FINAL_TARGET_PP_FILES'].components._strings,
+        list,
+        """Javascript XPCOM files.
 
        This variable contains a list of files to preprocess.  Generated
        files will be installed in the ``/components`` directory of the distribution.
-        """),
+        """
+        ),
 
-    'JS_PREFERENCE_FILES': (lambda context: context['FINAL_TARGET_FILES'].defaults.pref._strings, list,
-                            """Exported JavaScript files.
+    'JS_PREFERENCE_FILES': (
+        lambda context: context['FINAL_TARGET_FILES'].defaults.pref._strings,
+        list,
+        """Exported JavaScript files.
 
         A list of files copied into the dist directory for packaging and installation.
         Path will be defined for gre or application prefs dir based on what is building.
         """),
 
-    'JS_PREFERENCE_PP_FILES': (lambda context: context['FINAL_TARGET_PP_FILES'].defaults.pref._strings, list,
-                               """Like JS_PREFERENCE_FILES, preprocessed..
-        """),
+    'JS_PREFERENCE_PP_FILES': (
+        lambda context: context['FINAL_TARGET_PP_FILES'].defaults.pref._strings,
+        list,
+        """Like JS_PREFERENCE_FILES, preprocessed..
+        """
+        ),
 
     'RESOURCE_FILES': (lambda context: context['FINAL_TARGET_FILES'].res, list,
                        """List of resources to be exported, and in which subdirectories.
@@ -2459,13 +2528,16 @@ SPECIAL_VARIABLES = {
            RESOURCE_FILES.fonts += ['bar.res']
         """),
 
-    'CONTENT_ACCESSIBLE_FILES': (lambda context: context['FINAL_TARGET_FILES'].contentaccessible, list,
-                                 """List of files which can be accessed by web content through resource:// URIs.
+    'CONTENT_ACCESSIBLE_FILES': (
+        lambda context: context['FINAL_TARGET_FILES'].contentaccessible,
+        list,
+        """List of files which can be accessed by web content through resource:// URIs.
 
         ``CONTENT_ACCESSIBLE_FILES`` is used to list the files to be exported
         to ``dist/bin/contentaccessible``. Files can also be appended to a
         field to indicate which subdirectory they should be exported to.
-        """),
+        """
+        ),
 
     'EXTRA_JS_MODULES': (lambda context: context['FINAL_TARGET_FILES'].modules, list,
                          """Additional JavaScript files to distribute.

python/mozbuild/mozbuild/frontend/data.py

@@ -21,13 +21,12 @@ from mozbuild.frontend.context import (
     ObjDirPath,
     SourcePath,
 )
-from mozbuild.util import StrictOrderingOnAppendList
 from mozpack.chrome.manifest import ManifestEntry
 
 import mozpack.path as mozpath
 from .context import FinalTargetValue
 
-from collections import defaultdict, OrderedDict
+from collections import defaultdict
 import itertools
 
 from ..util import (
@@ -512,7 +511,8 @@ class BaseProgram(Linkable):
     @property
     def output_path(self):
         if self.installed:
-            return ObjDirPath(self._context, '!/' + mozpath.join(self.install_target, self.program))
+            return ObjDirPath(self._context, '!/' + mozpath.join(
+                self.install_target, self.program))
         else:
             return ObjDirPath(self._context, '!' + self.program)
 
@@ -1049,10 +1049,12 @@ class UnifiedSources(BaseSources):
 
             suffix = self.canonical_suffix[1:]
             unified_prefix = 'Unified_%s_%s' % (suffix, unified_prefix)
-            self.unified_source_mapping = list(group_unified_files(source_files,
-                                                                   unified_prefix=unified_prefix,
-                                                                   unified_suffix=suffix,
-                                                                   files_per_unified_file=files_per_unified_file))
+            self.unified_source_mapping = list(
+                group_unified_files(source_files,
+                                    unified_prefix=unified_prefix,
+                                    unified_suffix=suffix,
+                                    files_per_unified_file=files_per_unified_file)
+                )
 
 
 class InstallationTarget(ContextDerived):
@@ -1200,8 +1202,10 @@ class GeneratedFile(ContextDerived):
             '.inc',
             '.py',
             '.rs',
-            'node.stub',  # To avoid VPATH issues with installing node files: https://bugzilla.mozilla.org/show_bug.cgi?id=1461714#c55
-            # We need to compile Java to generate JNI wrappers for native code compilation to consume.
+            'node.stub',  # To avoid VPATH issues with installing node files:
+                          # https://bugzilla.mozilla.org/show_bug.cgi?id=1461714#c55
+            # We need to compile Java to generate JNI wrappers for native code
+            # compilation to consume.
             'android_apks',
             '.profdata',
             '.webidl'

python/mozbuild/mozbuild/frontend/emitter.py

@@ -24,7 +24,6 @@ import pytoml
 
 from .data import (
     BaseRustProgram,
-    BaseSources,
     ChromeManifestEntry,
     ComputedFlags,
     ConfigFileSubstitution,
@@ -57,7 +56,6 @@ from .data import (
     ObjdirFiles,
     ObjdirPreprocessedFiles,
     PerSourceFlag,
-    PgoGenerateOnlySources,
     WebIDLCollection,
     Program,
     RustLibrary,
@@ -93,7 +91,6 @@ from .context import (
     ObjDirPath,
     Path,
     SubContext,
-    TemplateContext,
 )
 
 from mozbuild.base import ExecutionSummary
@@ -448,8 +445,8 @@ class TreeMetadataEmitter(LoggingMixin):
             raise SandboxValidationError(
                 '%s contains "static:%s", but there is only a shared "%s" '
                 'in %s. You may want to add FORCE_STATIC_LIB=True in '
-                '%s/moz.build, or remove "static:".' % (variable, path,
-                                                        name, candidates[0].relobjdir, candidates[0].relobjdir),
+                '%s/moz.build, or remove "static:".' % (
+                    variable, path, name, candidates[0].relobjdir, candidates[0].relobjdir),
                 context)
 
         elif isinstance(obj, StaticLibrary) and isinstance(candidates[0],
@@ -586,8 +583,8 @@ class TreeMetadataEmitter(LoggingMixin):
             if program in self._binaries:
                 raise SandboxValidationError(
                     'Cannot use "%s" as %s name, '
-                    'because it is already used in %s' % (program, kind,
-                                                          self._binaries[program].relsrcdir), context)
+                    'because it is already used in %s' % (
+                        program, kind, self._binaries[program].relsrcdir), context)
         for kind, cls in [('PROGRAM', Program), ('HOST_PROGRAM', HostProgram)]:
             program = context.get(kind)
             if program:
@@ -636,8 +633,8 @@ class TreeMetadataEmitter(LoggingMixin):
                 if program in self._binaries:
                     raise SandboxValidationError(
                         'Cannot use "%s" in %s, '
-                        'because it is already used in %s' % (program, kind,
-                                                              self._binaries[program].relsrcdir), context)
+                        'because it is already used in %s' % (
+                            program, kind, self._binaries[program].relsrcdir), context)
                 self._binaries[program] = cls(context, program,
                                               is_unit_test=kind == 'CPP_UNIT_TESTS')
                 self._linkage.append((context, self._binaries[program],
@@ -650,8 +647,8 @@ class TreeMetadataEmitter(LoggingMixin):
 
         if host_libname:
             if host_libname == libname:
-                raise SandboxValidationError('LIBRARY_NAME and '
-                                             'HOST_LIBRARY_NAME must have a different value', context)
+                raise SandboxValidationError(
+                    'LIBRARY_NAME and HOST_LIBRARY_NAME must have a different value', context)
 
             is_rust_library = context.get('IS_RUST_LIBRARY')
             if is_rust_library:
@@ -860,9 +857,9 @@ class TreeMetadataEmitter(LoggingMixin):
                     assert isinstance(f, Path)
                     gen_srcs.append(full_path)
                 if symbol == 'SOURCES':
-                    flags = context_srcs[f]
-                    if flags:
-                        all_flags[full_path] = flags
+                    context_flags = context_srcs[f]
+                    if context_flags:
+                        all_flags[full_path] = context_flags
 
                 if isinstance(f, SourcePath) and not os.path.exists(full_path):
                     raise SandboxValidationError('File listed in %s does not '
@@ -1110,8 +1107,11 @@ class TreeMetadataEmitter(LoggingMixin):
             generated_files.add(str(sub.relpath))
             yield sub
 
-        for defines_var, cls, backend_flags in (('DEFINES', Defines, (computed_flags, computed_as_flags)),
-                                                ('HOST_DEFINES', HostDefines, (computed_host_flags,))):
+        for defines_var, cls, backend_flags in (('DEFINES', Defines,
+                                                 (computed_flags, computed_as_flags)),
+                                                ('HOST_DEFINES', HostDefines,
+                                                 (computed_host_flags,))
+                                                ):
             defines = context.get(defines_var)
             if defines:
                 defines_obj = cls(context, defines)
@@ -1152,18 +1152,20 @@ class TreeMetadataEmitter(LoggingMixin):
             full_path = local_include.full_path
             if not isinstance(local_include, ObjDirPath):
                 if not os.path.exists(full_path):
-                    raise SandboxValidationError('Path specified in LOCAL_INCLUDES '
-                                                 'does not exist: %s (resolved to %s)' % (local_include,
-                                                                                          full_path), context)
+                    raise SandboxValidationError(
+                        'Path specified in LOCAL_INCLUDES does not exist: %s (resolved to %s)' %
+                        (local_include, full_path), context)
                 if not os.path.isdir(full_path):
                     raise SandboxValidationError('Path specified in LOCAL_INCLUDES '
                                                  'is a filename, but a directory is required: %s '
-                                                 '(resolved to %s)' % (local_include, full_path), context)
+                                                 '(resolved to %s)' % (local_include, full_path),
+                                                 context)
             if (full_path == context.config.topsrcdir or
                     full_path == context.config.topobjdir):
-                raise SandboxValidationError('Path specified in LOCAL_INCLUDES '
-                                             '(%s) resolves to the topsrcdir or topobjdir (%s), which is '
-                                             'not allowed' % (local_include, full_path), context)
+                raise SandboxValidationError(
+                    'Path specified in LOCAL_INCLUDES '
+                    '(%s) resolves to the topsrcdir or topobjdir (%s), which is '
+                    'not allowed' % (local_include, full_path), context)
             include_obj = LocalInclude(context, local_include)
             local_includes.append(include_obj.path.full_path)
             yield include_obj
@@ -1258,8 +1260,13 @@ class TreeMetadataEmitter(LoggingMixin):
                             # in anything *but* LOCALIZED_FILES.
                             if f.target_basename in localized_generated_files:
                                 raise SandboxValidationError(
-                                    ('Outputs of LOCALIZED_GENERATED_FILES cannot be used in %s: ' +
-                                     '%s') % (var, f), context)
+                                    (
+                                        'Outputs of LOCALIZED_GENERATED_FILES cannot '
+                                        'be used in %s: %s'
+                                    )
+                                    % (var, f),
+                                    context,
+                                )
 
             # Addons (when XPI_NAME is defined) and Applications (when
             # DIST_SUBDIR is defined) use a different preferences directory
@@ -1496,9 +1503,10 @@ class TreeMetadataEmitter(LoggingMixin):
                             not os.path.isfile(mozpath.join(context.config.topsrcdir,
                                                             install_path[2:])),
                             install_path not in install_info.external_installs]):
-                        raise SandboxValidationError('Error processing test '
-                                                     'manifest %s: entry in support-files not present '
-                                                     'in the srcdir: %s' % (path, install_path), context)
+                        raise SandboxValidationError(
+                            'Error processing test '
+                            'manifest %s: entry in support-files not present '
+                            'in the srcdir: %s' % (path, install_path), context)
 
                 obj.deferred_installs |= install_info.deferred_installs
 
@@ -1535,16 +1543,18 @@ class TreeMetadataEmitter(LoggingMixin):
                 try:
                     del obj.installs[mozpath.join(manifest_dir, f)]
                 except KeyError:
-                    raise SandboxValidationError('Error processing test '
-                                                 'manifest %s: entry in generated-files not present '
-                                                 'elsewhere in manifest: %s' % (path, f), context)
+                    raise SandboxValidationError(
+                        'Error processing test '
+                        'manifest %s: entry in generated-files not present '
+                        'elsewhere in manifest: %s' % (path, f), context)
 
             yield obj
         except (AssertionError, Exception):
-            raise SandboxValidationError('Error processing test '
-                                         'manifest file %s: %s' % (path,
-                                                                   '\n'.join(traceback.format_exception(*sys.exc_info()))),
-                                         context)
+            raise SandboxValidationError(
+                'Error processing test '
+                'manifest file %s: %s' % (path,
+                                          '\n'.join(traceback.format_exception(*sys.exc_info()))),
+                context)
 
     def _process_reftest_manifest(self, context, flavor, manifest_path, manifest):
         manifest_full_path = manifest_path.full_path

python/mozbuild/mozbuild/frontend/gyp_reader.py

@@ -10,7 +10,6 @@ import sys
 import os
 import time
 import types
-import warnings
 
 import mozpack.path as mozpath
 from mozpack.files import FileFinder
@@ -23,10 +22,7 @@ from .context import (
 )
 from mozbuild.util import (
     expand_variables,
-    List,
-    memoize,
 )
-from .reader import SandboxValidationError
 
 # Define this module as gyp.generator.mozbuild so that gyp can use it
 # as a generator under the name "mozbuild".
@@ -94,7 +90,10 @@ def handle_actions(actions, context, action_overrides):
         output = outputs[0]
         if not output.startswith(idir):
             raise NotImplementedError(
-                'GYP actions outputting to somewhere other than <(INTERMEDIATE_DIR) not supported: %s' % output)
+                'GYP actions outputting to somewhere other than '
+                '<(INTERMEDIATE_DIR) not supported: %s'
+                % output
+            )
         output = output[len(idir):]
         context['GENERATED_FILES'] += [output]
         g = context['GENERATED_FILES'][output]
@@ -208,7 +207,8 @@ def process_gyp_result(gyp_result, gyp_dir_attrs, path, config, output,
                 context['PROGRAM'] = name.decode('utf-8')
             if spec['type'] == 'shared_library':
                 context['FORCE_SHARED_LIB'] = True
-            elif spec['type'] == 'static_library' and spec.get('variables', {}).get('no_expand_libs', '0') == '1':
+            elif spec['type'] == 'static_library' and \
+                    spec.get('variables', {}).get('no_expand_libs', '0') == '1':
                 # PSM links a NSS static library, but our folded libnss
                 # doesn't actually export everything that all of the
                 # objects within would need, so that one library
@@ -256,7 +256,8 @@ def process_gyp_result(gyp_result, gyp_dir_attrs, path, config, output,
                     name, value = define.split('=', 1)
                     # The NSS gyp file doesn't expose a way to override this
                     # currently, so we do so here.
-                    if name == 'NSS_ALLOW_SSLKEYLOGFILE' and config.substs.get('RELEASE_OR_BETA', False):
+                    if name == 'NSS_ALLOW_SSLKEYLOGFILE' and \
+                            config.substs.get('RELEASE_OR_BETA', False):
                         continue
                     context['DEFINES'][name] = value
                 else:

python/mozbuild/mozbuild/frontend/sandbox.py

@@ -155,7 +155,7 @@ class Sandbox(dict):
 
         try:
             source = self._finder.get(path).read()
-        except Exception as e:
+        except Exception:
             raise SandboxLoadError(self._context.source_stack,
                                    sys.exc_info()[2], read_error=path)
 

python/mozbuild/mozbuild/gn_processor.py

@@ -79,7 +79,9 @@ class MozbuildWriter(object):
             self.write(self.indent + key)
             self.write(' += [\n    ' + self.indent)
             self.write(
-                (',\n    ' + self.indent).join(alphabetical_sorted(self.mb_serialize(v) for v in value)))
+                (',\n    ' + self.indent).join(
+                    alphabetical_sorted(self.mb_serialize(v) for v in value))
+                )
             self.write('\n')
             self.write_ln(']')
 
@@ -277,7 +279,7 @@ def process_gn_config(gn_config, srcdir, config, output, non_unified_sources,
         context_attrs['ASFLAGS'] = spec.get('asflags_mozilla', [])
         if use_defines_in_asflags and defines:
             context_attrs['ASFLAGS'] += ['-D' + d for d in defines]
-        flags = [f for f in spec.get('cflags', []) if f in mozilla_flags]
+        flags = [_f for _f in spec.get('cflags', []) if _f in mozilla_flags]
         if flags:
             suffix_map = {
                 '.c': 'CFLAGS',
@@ -432,7 +434,6 @@ def write_mozbuild(config, srcdir, output, non_unified_sources, gn_config_files,
             mb.write('\n')
             mb.write(generated_header)
 
-            all_attr_sets = [attrs for _, attrs in configs]
             all_args = [args for args, _ in configs]
 
             # Start with attributes that will be a part of the mozconfig

python/mozbuild/mozbuild/jar.py

@@ -18,7 +18,6 @@ import logging
 from time import localtime
 from MozZipFile import ZipFile
 from cStringIO import StringIO
-from collections import defaultdict
 
 from mozbuild.preprocessor import Preprocessor
 from mozbuild.action.buildlist import addEntriesToListFile
@@ -108,9 +107,10 @@ class JarManifestParser(object):
     relsrcline = re.compile('relativesrcdir\s+(?P<relativesrcdir>.+?):')
     regline = re.compile('\%\s+(.*)$')
     entryre = '(?P<optPreprocess>\*)?(?P<optOverwrite>\+?)\s+'
-    entryline = re.compile(entryre
-                           + '(?P<output>[\w\d.\-\_\\\/\+\@]+)\s*(\((?P<locale>\%?)(?P<source>[\w\d.\-\_\\\/\@\*]+)\))?\s*$'
-                           )
+    entryline = re.compile(
+        entryre + ('(?P<output>[\w\d.\-\_\\\/\+\@]+)\s*'
+                   '(\((?P<locale>\%?)(?P<source>[\w\d.\-\_\\\/\@\*]+)\))?\s*$')
+        )
 
     def __init__(self):
         self._current_jar = None
@@ -245,7 +245,8 @@ class JarMaker(object):
                      help='base directory to be used for localization (requires relativesrcdir)'
                      )
         p.add_option('--locale-mergedir', type='string', action='store',
-                     help='base directory to be used for l10n-merge (requires l10n-base and relativesrcdir)'
+                     help='base directory to be used for l10n-merge '
+                     '(requires l10n-base and relativesrcdir)'
                      )
         p.add_option('--relativesrcdir', type='string',
                      help='relativesrcdir to be used for localization')
@@ -501,7 +502,7 @@ class JarMaker(object):
             try:
                 info = self.jarfile.getinfo(aPath)
                 return info.date_time
-            except:
+            except Exception:
                 return 0
 
         def getOutput(self, name):

python/mozbuild/mozbuild/mach_commands.py

@@ -108,12 +108,12 @@ class Watch(MachCommandBase):
 
         if not conditions.is_artifact_build(self):
             print('mach watch requires an artifact build. See '
-                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Simple_Firefox_build')
+                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Simple_Firefox_build')  # noqa
             return 1
 
         if not self.substs.get('WATCHMAN', None):
             print('mach watch requires watchman to be installed. See '
-                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Incremental_builds_with_filesystem_watching')
+                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Incremental_builds_with_filesystem_watching')  # noqa
             return 1
 
         self._activate_virtualenv()
@@ -121,7 +121,7 @@ class Watch(MachCommandBase):
             self.virtualenv_manager.install_pip_package('pywatchman==1.3.0')
         except Exception:
             print('Could not install pywatchman from pip. See '
-                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Incremental_builds_with_filesystem_watching')
+                  'https://developer.mozilla.org/docs/Mozilla/Developer_guide/Build_Instructions/Incremental_builds_with_filesystem_watching')  # noqa
             return 1
 
         from mozbuild.faster_daemon import Daemon
@@ -310,7 +310,7 @@ class CargoProvider(MachCommandBase):
 
         if all_crates:
             crates = crates_and_roots.keys()
-        elif crates == None or crates == []:
+        elif crates is None or crates == []:
             crates = ['gkrust']
 
         for crate in crates:
@@ -354,6 +354,7 @@ class Doctor(MachCommandBase):
 class Clobber(MachCommandBase):
     NO_AUTO_LOG = True
     CLOBBER_CHOICES = ['objdir', 'python']
+
     @Command('clobber', category='build',
              description='Clobber the tree (delete the object directory).')
     @CommandArgument('what', default=['objdir'], nargs='*',
@@ -571,8 +572,9 @@ class Warnings(MachCommandBase):
                 continue
 
             if warning['column'] is not None:
-                print('%s:%d:%d [%s] %s' % (filename, warning['line'],
-                                            warning['column'], warning['flag'], warning['message']))
+                print('%s:%d:%d [%s] %s' % (
+                    filename, warning['line'], warning['column'],
+                    warning['flag'], warning['message']))
             else:
                 print('%s:%d [%s] %s' % (filename, warning['line'],
                                          warning['flag'], warning['message']))
@@ -592,8 +594,9 @@ class GTestCommands(MachCommandBase):
     @Command('gtest', category='testing',
              description='Run GTest unit tests (C++ tests).')
     @CommandArgument('gtest_filter', default=b"*", nargs='?', metavar='gtest_filter',
-                     help="test_filter is a ':'-separated list of wildcard patterns (called the positive patterns),"
-                     "optionally followed by a '-' and another ':'-separated pattern list (called the negative patterns).")
+                     help="test_filter is a ':'-separated list of wildcard patterns "
+                     "(called the positive patterns), optionally followed by a '-' "
+                     "and another ':'-separated pattern list (called the negative patterns).")
     @CommandArgument('--jobs', '-j', default='1', nargs='?', metavar='jobs', type=int,
                      help='Run the tests in parallel using multiple processes.')
     @CommandArgument('--tbpl-parser', '-t', action='store_true',
@@ -620,12 +623,14 @@ class GTestCommands(MachCommandBase):
                      help='(Android only) Path to gtest libxul.so.')
     @CommandArgumentGroup('debugging')
     @CommandArgument('--debug', action='store_true', group='debugging',
-                     help='Enable the debugger. Not specifying a --debugger option will result in the default debugger being used.')
+                     help='Enable the debugger. Not specifying a --debugger option will result in '
+                     'the default debugger being used.')
     @CommandArgument('--debugger', default=None, type=str, group='debugging',
                      help='Name of debugger to use.')
     @CommandArgument('--debugger-args', default=None, metavar='params', type=str,
                      group='debugging',
-                     help='Command-line arguments to pass to the debugger itself; split as the Bourne shell would.')
+                     help='Command-line arguments to pass to the debugger itself; '
+                     'split as the Bourne shell would.')
     def gtest(self, shuffle, jobs, gtest_filter, tbpl_parser,
               package, adb_path, device_serial, remote_test_root, libxul_path,
               debug, debugger, debugger_args):
@@ -664,7 +669,8 @@ class GTestCommands(MachCommandBase):
             if debug or debugger or debugger_args:
                 print("--debug options are not supported on Android and will be ignored")
             return self.android_gtest(cwd, shuffle, gtest_filter,
-                                      package, adb_path, device_serial, remote_test_root, libxul_path)
+                                      package, adb_path, device_serial,
+                                      remote_test_root, libxul_path)
 
         if package or adb_path or device_serial or remote_test_root or libxul_path:
             print("One or more Android-only options will be ignored")
@@ -748,7 +754,7 @@ class GTestCommands(MachCommandBase):
         from mozlog.commandline import setup_logging
         format_args = {'level': self._mach_context.settings['test']['level']}
         default_format = self._mach_context.settings['test']['format']
-        log = setup_logging('mach-gtest', {}, {default_format: sys.stdout}, format_args)
+        setup_logging('mach-gtest', {}, {default_format: sys.stdout}, format_args)
 
         # ensure that a device is available and test app is installed
         from mozrunner.devices.android_device import (verify_android_device, get_adb_path)
@@ -916,11 +922,13 @@ class RunProgram(MachCommandBase):
     prog_group = 'the compiled program'
 
     @Command('run-desktop', category='post-build',
-        conditional_name='run',
-        conditions=[conditions.is_not_android],
+             conditional_name='run',
+             conditions=[conditions.is_not_android],
              description='Run the compiled program, possibly under a debugger or DMD.')
     @CommandArgument('params', nargs='...', group=prog_group,
-                     help='Command-line arguments to be passed through to the program. Not specifying a --profile or -P option will result in a temporary profile being used.')
+                     help='Command-line arguments to be passed through to the program. Not '
+                     'specifying a --profile or -P option will result in a temporary profile '
+                     'being used.')
     @CommandArgumentGroup(prog_group)
     @CommandArgument('--remote', '-r', action='store_true', group=prog_group,
                      help='Do not pass the --no-remote argument by default.')
@@ -933,19 +941,26 @@ class RunProgram(MachCommandBase):
     @CommandArgument('--enable-crash-reporter', action='store_true', group=prog_group,
                      help='Run the program with the crash reporter enabled.')
     @CommandArgument('--setpref', action='append', default=[], group=prog_group,
-                     help='Set the specified pref before starting the program. Can be set multiple times. Prefs can also be set in ~/.mozbuild/machrc in the [runprefs] section - see `./mach settings` for more information.')
+                     help='Set the specified pref before starting the program. Can be set '
+                     'multiple times. Prefs can also be set in ~/.mozbuild/machrc in the '
+                     '[runprefs] section - see `./mach settings` for more information.')
     @CommandArgument('--temp-profile', action='store_true', group=prog_group,
-                     help='Run the program using a new temporary profile created inside the objdir.')
+                     help='Run the program using a new temporary profile created inside '
+                     'the objdir.')
     @CommandArgument('--macos-open', action='store_true', group=prog_group,
-                     help="On macOS, run the program using the open(1) command. Per open(1), the browser is launched \"just as if you had double-clicked the file's icon\". The browser can not be launched under a debugger with this option.")
+                     help="On macOS, run the program using the open(1) command. Per open(1), "
+                     "the browser is launched \"just as if you had double-clicked the file's "
+                     "icon\". The browser can not be launched under a debugger with this option.")
     @CommandArgumentGroup('debugging')
     @CommandArgument('--debug', action='store_true', group='debugging',
-                     help='Enable the debugger. Not specifying a --debugger option will result in the default debugger being used.')
+                     help='Enable the debugger. Not specifying a --debugger option will result '
+                     'in the default debugger being used.')
     @CommandArgument('--debugger', default=None, type=str, group='debugging',
                      help='Name of debugger to use.')
     @CommandArgument('--debugger-args', default=None, metavar='params', type=str,
                      group='debugging',
-                     help='Command-line arguments to pass to the debugger itself; split as the Bourne shell would.')
+                     help='Command-line arguments to pass to the debugger itself; '
+                     'split as the Bourne shell would.')
     @CommandArgument('--debugparams', action=StoreDebugParamsAndWarnAction,
                      default=None, type=str, dest='debugger_args', group='debugging',
                      help=argparse.SUPPRESS)
@@ -1724,7 +1739,7 @@ class StaticAnalysisMonitor(object):
 
         try:
             warning = self._warnings_collector.process_line(line)
-        except:
+        except Exception:
             pass
 
         if line.find('clang-tidy') != -1:
@@ -1805,8 +1820,8 @@ class StaticAnalysis(MachCommandBase):
                      help='Output format to write in a file')
     @CommandArgument('--outgoing', default=False, action='store_true',
                      help='Run static analysis checks on outgoing files from mercurial repository')
-    def check(self, source=None, jobs=2, strip=1, verbose=False,
-              checks='-*', fix=False, header_filter='', output=None, format='text', outgoing=False):
+    def check(self, source=None, jobs=2, strip=1, verbose=False, checks='-*',
+              fix=False, header_filter='', output=None, format='text', outgoing=False):
         from mozbuild.controller.building import (
             StaticAnalysisFooter,
             StaticAnalysisOutputManager,
@@ -1820,7 +1835,8 @@ class StaticAnalysis(MachCommandBase):
             return rc
 
         if self._is_version_eligible() is False:
-            self.log(logging.ERROR, 'static-analysis', {}, "You're using an old version of clang-format binary."
+            self.log(logging.ERROR, 'static-analysis', {},
+                     "You're using an old version of clang-format binary."
                      " Please update to a more recent one by running: './mach bootstrap'")
             return 1
 
@@ -1895,11 +1911,12 @@ class StaticAnalysis(MachCommandBase):
                      help='Write coverity output translated to json output in a file')
     @CommandArgument('--coverity_output_path', '-co', default=None,
                      help='Path where to write coverity results as cov-results.json. '
-                     'If no path is specified the default path from the coverity working directory, '
-                     '~./mozbuild/coverity is used.')
+                     'If no path is specified the default path from the coverity working '
+                     'directory, ~./mozbuild/coverity is used.')
     @CommandArgument('--outgoing', default=False, action='store_true',
                      help='Run coverity on outgoing files from mercurial or git repository')
-    def check_coverity(self, source=[], output=None, coverity_output_path=None, outgoing=False, verbose=False):
+    def check_coverity(self, source=[], output=None, coverity_output_path=None,
+                       outgoing=False, verbose=False):
         self._set_log_level(verbose)
         self.log_manager.enable_all_structured_loggers()
 
@@ -1994,14 +2011,16 @@ class StaticAnalysis(MachCommandBase):
     def get_reliability_index_for_cov_checker(self, checker_name):
         if self._cov_config is None:
             self.log(logging.INFO, 'static-analysis', {}, 'Coverity config file not found, '
-                     'using default-value \'reliablity\' = medium. for checker {}'.format(checker_name))
+                     'using default-value \'reliablity\' = medium. for checker {}'.format(
+                        checker_name))
             return 'medium'
 
         checkers = self._cov_config['coverity_checkers']
         if checker_name not in checkers:
             self.log(logging.INFO, 'static-analysis', {},
                      'Coverity checker {} not found to determine reliability index. '
-                     'For the moment we shall use the default \'reliablity\' = medium.'.format(checker_name))
+                     'For the moment we shall use the default \'reliablity\' = medium.'.format(
+                        checker_name))
             return 'medium'
 
         if 'reliability' not in checkers[checker_name]:
@@ -2009,7 +2028,8 @@ class StaticAnalysis(MachCommandBase):
             self.log(logging.INFO, 'static-analysis', {},
                      'Coverity checker {} doesn\'t have a reliability index set, '
                      'field \'reliability is missing\', please cosinder adding it. '
-                     'For the moment we shall use the default \'reliablity\' = medium.'.format(checker_name))
+                     'For the moment we shall use the default \'reliablity\' = medium.'.format(
+                        checker_name))
             return 'medium'
 
         return checkers[checker_name]['reliability']
@@ -2033,7 +2053,9 @@ class StaticAnalysis(MachCommandBase):
                     'line': issue['mainEventLineNumber'],
                     'flag': issue['checkerName'],
                     'message': event_path['eventDescription'],
-                    'reliability': self.get_reliability_index_for_cov_checker(issue['checkerName']),
+                    'reliability': self.get_reliability_index_for_cov_checker(
+                        issue['checkerName']
+                        ),
                     'extra': {
                         'category': issue['checkerProperties']['category'],
                         'stateOnServer': issue['stateOnServer'],
@@ -2043,10 +2065,11 @@ class StaticAnalysis(MachCommandBase):
 
                 # Embed all events into extra message
                 for event in issue['events']:
-                    dict_issue['extra']['stack'].append({'file_path': event['strippedFilePathname'],
-                                                         'line_number': event['lineNumber'],
-                                                         'path_type': event['eventTag'],
-                                                         'description': event['eventDescription']})
+                    dict_issue['extra']['stack'].append(
+                        {'file_path': event['strippedFilePathname'],
+                         'line_number': event['lineNumber'],
+                         'path_type': event['eventTag'],
+                         'description': event['eventDescription']})
 
                 return dict_issue
 
@@ -2054,8 +2077,12 @@ class StaticAnalysis(MachCommandBase):
                 path = self.cov_is_file_in_source(issue['strippedMainEventFilePathname'], source)
                 if path is None:
                     # Since we skip a result we should log it
-                    self.log(logging.INFO, 'static-analysis', {}, 'Skipping CID: {0} from file: {1} since it\'s not related with the current patch.'.format(
-                        issue['stateOnServer']['cid'], issue['strippedMainEventFilePathname']))
+                    self.log(logging.INFO, 'static-analysis', {},
+                             'Skipping CID: {0} from file: {1} since it\'s not related '
+                             'with the current patch.'.format(
+                                issue['stateOnServer']['cid'],
+                                issue['strippedMainEventFilePathname'])
+                             )
                     continue
                 if path in files_list:
                     files_list[path]['warnings'].append(build_element(issue))
@@ -2340,7 +2367,7 @@ class StaticAnalysis(MachCommandBase):
                     if item['publish']:
                         checkers.append(item['name'])
                 tp_path = mozpath.join(self.topsrcdir, config['third_party'])
-            except Exception as e:
+            except Exception:
                 print('Looks like config.yaml is not valid, so we are unable '
                       'to determine default checkers, and which folder to '
                       'exclude, using defaults provided by infer')
@@ -2406,7 +2433,8 @@ class StaticAnalysis(MachCommandBase):
                 return True
         except subprocess.CalledProcessError as e:
             self.log(logging.ERROR, 'static-analysis', {},
-                     "Error determining the version clang-tidy/format binary, please see the attached exception: \n{}".format(e.output))
+                     "Error determining the version clang-tidy/format binary, please see the "
+                     "attached exception: \n{}".format(e.output))
 
         return False
 
@@ -2550,8 +2578,11 @@ class StaticAnalysis(MachCommandBase):
         platform, _ = self.platform
 
         if platform not in self._clang_tidy_config['platforms']:
-            self.log(logging.ERROR, 'static-analysis', {},
-                     "RUNNING: clang-tidy autotest for platform {} not supported.".format(platform))
+            self.log(
+                logging.ERROR, 'static-analysis', {},
+                "RUNNING: clang-tidy autotest for platform {} not supported.".format(
+                    platform)
+                )
             return self.TOOLS_UNSUPORTED_PLATFORM
 
         import concurrent.futures
@@ -2581,7 +2612,8 @@ class StaticAnalysis(MachCommandBase):
                 # 1. Checker attribute 'publish' is False.
                 not_published = not bool(item.get('publish', True))
                 # 2. Checker has restricted-platforms and current platform is not of them.
-                ignored_platform = 'restricted-platforms' in item and platform not in item['restricted-platforms']
+                ignored_platform = ('restricted-platforms' in item and
+                                    platform not in item['restricted-platforms'])
                 # 3. Checker name is mozilla-* or -*.
                 ignored_checker = item['name'] in ['mozilla-*', '-*']
                 # 4. List checker_names is passed and the current checker is not part of the
@@ -2619,20 +2651,29 @@ class StaticAnalysis(MachCommandBase):
 
                     message_to_log = ''
                     if checker_error == self.TOOLS_CHECKER_NOT_FOUND:
-                        message_to_log = "\tChecker {} not present in this clang-tidy version.".format(
-                            checker_name)
+                        message_to_log = \
+                            "\tChecker {} not present in this clang-tidy version.".format(
+                                checker_name)
                     elif checker_error == self.TOOLS_CHECKER_NO_TEST_FILE:
-                        message_to_log = "\tChecker {0} does not have a test file - {0}.cpp".format(
-                            checker_name)
+                        message_to_log = \
+                            "\tChecker {0} does not have a test file - {0}.cpp".format(
+                                checker_name)
                     elif checker_error == self.TOOLS_CHECKER_RETURNED_NO_ISSUES:
-                        message_to_log = "\tChecker {0} did not find any issues in its test file, clang-tidy output for the run is:\n{1}".format(
-                            checker_name, info1)
+                        message_to_log = (
+                            "\tChecker {0} did not find any issues in its test file, "
+                            "clang-tidy output for the run is:\n{1}"
+                            ).format(checker_name, info1)
                     elif checker_error == self.TOOLS_CHECKER_RESULT_FILE_NOT_FOUND:
-                        message_to_log = "\tChecker {0} does not have a result file - {0}.json".format(
-                            checker_name)
+                        message_to_log = \
+                            "\tChecker {0} does not have a result file - {0}.json".format(
+                                checker_name)
                     elif checker_error == self.TOOLS_CHECKER_DIFF_FAILED:
-                        message_to_log = "\tChecker {0}\nExpected: {1}\nGot: {2}\nclang-tidy output for the run is:\n{3}".format(
-                            checker_name, info1, info2, info3)
+                        message_to_log = (
+                            "\tChecker {0}\nExpected: {1}\n"
+                            "Got: {2}\n"
+                            "clang-tidy output for the run is:\n"
+                            "{3}"
+                            ).format(checker_name, info1, info2, info3)
 
                     print('\n'+message_to_log)
 
@@ -2674,8 +2715,11 @@ class StaticAnalysis(MachCommandBase):
             return self.TOOLS_CHECKER_LIST_EMPTY
 
         issues, clang_output = self._run_analysis(
-            checks='-*,' + ",".join(items), header_filter='',
-            sources=[mozpath.join(self._clang_tidy_base_path, "test", checker) + '.cpp' for checker in items], print_out=True)
+            checks='-*,' + ",".join(items),
+            header_filter='',
+            sources=[mozpath.join(self._clang_tidy_base_path, "test", checker) + '.cpp'
+                     for checker in items],
+            print_out=True)
 
         if issues is None:
             return self.TOOLS_CHECKER_FAILED_FILE
@@ -2705,7 +2749,8 @@ class StaticAnalysis(MachCommandBase):
                 print('\tChecker {0} expect following results: \n\t\t{1}'.format(
                     failed_check, baseline_issue))
 
-            print('This is the output generated by clang-tidy for the bulk build:\n{}'.format(clang_output))
+            print('This is the output generated by clang-tidy for the bulk build:\n{}'.format(
+                clang_output))
             return self.TOOLS_CHECKER_DIFF_FAILED
 
         return self.TOOLS_SUCCESS
@@ -2866,9 +2911,11 @@ class StaticAnalysis(MachCommandBase):
     @CommandArgument('--force', action='store_true',
                      help='Force re-install even though the tool exists in mozbuild.',
                      default=False)
-    @CommandArgument('--minimal-install', action='store_true', help='Download only clang based tool.',
+    @CommandArgument('--minimal-install', action='store_true',
+                     help='Download only clang based tool.',
                      default=False)
-    def install(self, source=None, skip_cache=False, force=False, minimal_install=False, verbose=False):
+    def install(self, source=None, skip_cache=False, force=False, minimal_install=False,
+                verbose=False):
         self._set_log_level(verbose)
         rc = self._get_clang_tools(force=force, skip_cache=skip_cache,
                                    source=source, verbose=verbose)
@@ -2932,12 +2979,14 @@ class StaticAnalysis(MachCommandBase):
     @CommandArgument('--output', '-o', default=None, dest='output_path',
                      help='Specify a file handle to write clang-format raw output instead of '
                           'applying changes. This can be stdout or a file path.')
-    @CommandArgument('--format', '-f', choices=('diff', 'json'), default='diff', dest='output_format',
+    @CommandArgument('--format', '-f', choices=('diff', 'json'), default='diff',
+                     dest='output_format',
                      help='Specify the output format used: diff is the raw patch provided by '
                      'clang-format, json is a list of atomic changes to process.')
     @CommandArgument('--outgoing', default=False, action='store_true',
                      help='Run clang-format on outgoing files from mercurial repository')
-    def clang_format(self, assume_filename, path, commit, output_path=None, output_format='diff', verbose=False, outgoing=False):
+    def clang_format(self, assume_filename, path, commit, output_path=None, output_format='diff',
+                     verbose=False, outgoing=False):
         # Run clang-format or clang-format-diff on the local changes
         # or files/directories
         if path is None and outgoing:
@@ -2978,7 +3027,8 @@ class StaticAnalysis(MachCommandBase):
                 return rc
 
         if self._is_version_eligible() is False:
-            self.log(logging.ERROR, 'static-analysis', {}, "You're using an old version of clang-format binary."
+            self.log(logging.ERROR, 'static-analysis', {},
+                     "You're using an old version of clang-format binary."
                      " Please update to a more recent one by running: './mach bootstrap'")
             return 1
 
@@ -2987,7 +3037,8 @@ class StaticAnalysis(MachCommandBase):
                                                self._clang_format_path, commit, output)
 
         if assume_filename:
-            return self._run_clang_format_in_console(self._clang_format_path, path, assume_filename)
+            return self._run_clang_format_in_console(self._clang_format_path,
+                                                     path, assume_filename)
 
         return self._run_clang_format_path(self._clang_format_path, path, output, output_format)
 
@@ -3010,7 +3061,7 @@ class StaticAnalysis(MachCommandBase):
         }
 
         # Verify if this checker actually exists
-        if not check in self._clang_tidy_checks:
+        if check not in self._clang_tidy_checks:
             checker_error['checker-error'] = self.TOOLS_CHECKER_NOT_FOUND
             checkers_results.append(checker_error)
             return self.TOOLS_CHECKER_NOT_FOUND
@@ -3154,7 +3205,7 @@ class StaticAnalysis(MachCommandBase):
             ran_configure = True
             try:
                 config = self.config_environment
-            except Exception as e:
+            except Exception:
                 pass
 
         return (0, config, ran_configure)
@@ -3216,10 +3267,10 @@ class StaticAnalysis(MachCommandBase):
         self._clang_apply_replacements = mozpath.join(
             self._clang_tools_path, "clang-tidy", "bin",
             "clang-apply-replacements" + config.substs.get('BIN_SUFFIX', ''))
-        self._run_clang_tidy_path = mozpath.join(self._clang_tools_path, "clang-tidy", "share", "clang",
-                                                 "run-clang-tidy.py")
-        self._clang_format_diff = mozpath.join(self._clang_tools_path, "clang-tidy", "share", "clang",
-                                               "clang-format-diff.py")
+        self._run_clang_tidy_path = mozpath.join(self._clang_tools_path, "clang-tidy",
+                                                 "share", "clang", "run-clang-tidy.py")
+        self._clang_format_diff = mozpath.join(self._clang_tools_path, "clang-tidy",
+                                               "share", "clang", "clang-format-diff.py")
         return 0
 
     def _do_clang_tools_exist(self):
@@ -3530,7 +3581,8 @@ class StaticAnalysis(MachCommandBase):
                         # here, we expect changes. if we are here, this means that
                         # there is a diff to show
                         if e.output:
-                            # Replace the temp path by the path relative to the repository to display a valid patch
+                            # Replace the temp path by the path relative to the repository to
+                            # display a valid patch
                             relative_path = os.path.relpath(original_path, self.topsrcdir)
                             patch = e.output.replace(target_file, relative_path)
                             patch = patch.replace(original_path, relative_path)
@@ -3643,11 +3695,13 @@ class Vendor(MachCommandBase):
         vendor_command.vendor(**kwargs)
 
     @SubCommand('vendor', 'aom',
-                description='Vendor av1 video codec reference implementation into the source repository.')
+                description='Vendor av1 video codec reference implementation into the '
+                'source repository.')
     @CommandArgument('-r', '--revision',
                      help='Repository tag or commit to update to.')
     @CommandArgument('--repo',
-                     help='Repository url to pull a snapshot from. Supports github and googlesource.')
+                     help='Repository url to pull a snapshot from. '
+                     'Supports github and googlesource.')
     @CommandArgument('--ignore-modified', action='store_true',
                      help='Ignore modified files in current checkout',
                      default=False)
@@ -3655,6 +3709,7 @@ class Vendor(MachCommandBase):
         from mozbuild.vendor_aom import VendorAOM
         vendor_command = self._spawn(VendorAOM)
         vendor_command.vendor(**kwargs)
+
     @SubCommand('vendor', 'dav1d',
                 description='Vendor dav1d implementation of AV1 into the source repository.')
     @CommandArgument('-r', '--revision',
@@ -3674,7 +3729,11 @@ class Vendor(MachCommandBase):
     @CommandArgument('--with-windows-wheel', action='store_true',
                      help='Vendor a wheel for Windows along with the source package',
                      default=False)
-    @CommandArgument('packages', default=None, nargs='*', help='Packages to vendor. If omitted, packages and their dependencies defined in Pipfile.lock will be vendored. If Pipfile has been modified, then Pipfile.lock will be regenerated. Note that transient dependencies may be updated when running this command.')
+    @CommandArgument('packages', default=None, nargs='*',
+                     help='Packages to vendor. If omitted, packages and their dependencies '
+                     'defined in Pipfile.lock will be vendored. If Pipfile has been modified, '
+                     'then Pipfile.lock will be regenerated. Note that transient dependencies '
+                     'may be updated when running this command.')
     def vendor_python(self, **kwargs):
         from mozbuild.vendor_python import VendorPython
         vendor_command = self._spawn(VendorPython)
@@ -3698,16 +3757,19 @@ class WebRTCGTestCommands(GTestCommands):
     @Command('webrtc-gtest', category='testing',
              description='Run WebRTC.org GTest unit tests.')
     @CommandArgument('gtest_filter', default=b"*", nargs='?', metavar='gtest_filter',
-                     help="test_filter is a ':'-separated list of wildcard patterns (called the positive patterns),"
-                     "optionally followed by a '-' and another ':'-separated pattern list (called the negative patterns).")
+                     help="test_filter is a ':'-separated list of wildcard patterns "
+                     "(called the positive patterns), optionally followed by a '-' and "
+                     "another ':'-separated pattern list (called the negative patterns).")
     @CommandArgumentGroup('debugging')
     @CommandArgument('--debug', action='store_true', group='debugging',
-                     help='Enable the debugger. Not specifying a --debugger option will result in the default debugger being used.')
+                     help='Enable the debugger. Not specifying a --debugger option will '
+                     'result in the default debugger being used.')
     @CommandArgument('--debugger', default=None, type=str, group='debugging',
                      help='Name of debugger to use.')
     @CommandArgument('--debugger-args', default=None, metavar='params', type=str,
                      group='debugging',
-                     help='Command-line arguments to pass to the debugger itself; split as the Bourne shell would.')
+                     help='Command-line arguments to pass to the debugger itself; '
+                     'split as the Bourne shell would.')
     def gtest(self, gtest_filter, debug, debugger,
               debugger_args):
         app_path = self.get_binary_path('webrtc-gtest')
@@ -3878,7 +3940,8 @@ class Analyze(MachCommandBase):
             return 1
 
     @SubCommand('analyze', 'all',
-                description='Get a report of files changed within the last n days and their corresponding build cost.')
+                description='Get a report of files changed within the last n days and '
+                'their corresponding build cost.')
     @CommandArgument('--days', '-d', type=int, default=14,
                      help='Number of days to include in the report.')
     @CommandArgument('--format', default='pretty',

python/mozbuild/mozbuild/makeutil.py

@@ -129,7 +129,7 @@ class Rule(object):
 
     def dependencies(self):
         '''Return an iterator on the rule dependencies.'''
-        return iter(d for d in self._dependencies if not d in self._targets)
+        return iter(d for d in self._dependencies if d not in self._targets)
 
     def commands(self):
         '''Return an iterator on the rule commands.'''

python/mozbuild/mozbuild/mozconfig.py

@@ -11,7 +11,6 @@ import sys
 import subprocess
 import traceback
 
-from collections import defaultdict
 from mozpack import path as mozpath
 
 

python/mozbuild/mozbuild/mozinfo.py

@@ -130,7 +130,7 @@ def build_dict(config, env=os.environ):
         d['platform_guess'] = guess_platform()
         d['buildtype_guess'] = guess_buildtype()
 
-    if 'buildapp' in d and d['buildapp'] == 'mobile/android' and 'MOZ_ANDROID_MIN_SDK_VERSION' in substs:
+    if d.get('buildapp', '') == 'mobile/android' and 'MOZ_ANDROID_MIN_SDK_VERSION' in substs:
         d['android_min_sdk'] = substs['MOZ_ANDROID_MIN_SDK_VERSION']
 
     return d

python/mozbuild/mozbuild/preprocessor.py

@@ -497,7 +497,7 @@ class Preprocessor:
                                          None)
             try:
                 from makeutil import Makefile
-            except:
+            except Exception:
                 raise Preprocessor.Error(self, "--depend requires the "
                                                "mozbuild.makeutil module", None)
             depfile = get_output_file(options.depend)
@@ -598,7 +598,7 @@ class Preprocessor:
             val = self.applyFilters(m.group('value'))
             try:
                 val = int(val)
-            except:
+            except Exception:
                 pass
         self.context[m.group('name')] = val
 
@@ -709,7 +709,6 @@ class Preprocessor:
 
     def do_expand(self, args):
         lst = re.split('__(\w+)__', args, re.U)
-        do_replace = False
 
         def vsubst(v):
             if v in self.context:
@@ -805,7 +804,7 @@ class Preprocessor:
                 args = open(args, 'rU')
             except Preprocessor.Error:
                 raise
-            except:
+            except Exception:
                 raise Preprocessor.Error(self, 'FILE_NOT_FOUND', str(args))
         self.checkLineNumbers = bool(re.search('\.(js|jsm|java|webidl)(?:\.in)?$', args.name))
         oldFile = self.context['FILE']

python/mozbuild/mozbuild/repackaging/installer.py

@@ -11,7 +11,8 @@ from mozbuild.action.exe_7z_archive import archive_exe
 from mozbuild.util import ensureParentDir
 
 
-def repackage_installer(topsrcdir, tag, setupexe, package, output, package_name, sfx_stub, use_upx):
+def repackage_installer(topsrcdir, tag, setupexe, package, output,
+                        package_name, sfx_stub, use_upx):
     if package and not zipfile.is_zipfile(package):
         raise Exception("Package file %s is not a valid .zip file." % package)
     if package is not None and package_name is None:

python/mozbuild/mozbuild/repackaging/msi.py

@@ -57,7 +57,7 @@ def repackage_msi(topsrcdir, wsx, version, locale, arch, setupexe, candle, light
         raise Exception("%s does not exist." % light)
     embeddedVersion = '0.0.0.0'
     # Version string cannot contain 'a' or 'b' when embedding in msi manifest.
-    if not 'a' in version and not 'b' in version:
+    if 'a' not in version and 'b' not in version:
         if version.endswith('esr'):
             parts = version[:-3].split('.')
         else:

python/mozbuild/mozbuild/test/action/test_buildlist.py

@@ -5,9 +5,7 @@
 import unittest
 
 import os
-import sys
 import os.path
-import time
 from tempfile import mkdtemp
 from shutil import rmtree
 import mozunit

python/mozbuild/mozbuild/test/action/test_node.py

@@ -37,7 +37,7 @@ class TestNode(unittest.TestCase):
     def tearDown(self):
         try:
             SCRIPT_ALLOWLIST.remove(TEST_SCRIPT)
-        except:
+        except Exception:
             pass
 
     def test_generate_no_returned_deps(self):

python/mozbuild/mozbuild/test/action/test_process_install_manifest.py

@@ -7,15 +7,8 @@ import os
 
 import mozunit
 
-from unittest import expectedFailure
-
-from mozpack.copier import (
-    FileCopier,
-    FileRegistry,
-)
 from mozpack.manifests import (
     InstallManifest,
-    UnreadableInstallManifest,
 )
 from mozpack.test.test_files import TestWithTmpDir
 

python/mozbuild/mozbuild/test/backend/test_build.py

@@ -58,7 +58,7 @@ class TestBuild(unittest.TestCase):
                 backend(config).consume(definitions)
 
             yield config
-        except:
+        except Exception:
             raise
         finally:
             if not os.environ.get('MOZ_NO_CLEANUP'):
@@ -73,7 +73,7 @@ class TestBuild(unittest.TestCase):
 
         try:
             yield handle_make_line
-        except:
+        except Exception:
             print('\n'.join(lines))
             raise
 

python/mozbuild/mozbuild/test/backend/test_configenvironment.py

@@ -3,10 +3,8 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
-import posixpath
-from StringIO import StringIO
 import unittest
-from mozunit import main, MockedOpen
+from mozunit import main
 
 import mozbuild.backend.configenvironment as ConfigStatus
 
@@ -19,7 +17,7 @@ class ConfigEnvironment(ConfigStatus.ConfigEnvironment):
     def __init__(self, *args, **kwargs):
         ConfigStatus.ConfigEnvironment.__init__(self, *args, **kwargs)
         # Be helpful to unit tests
-        if not 'top_srcdir' in self.substs:
+        if 'top_srcdir' not in self.substs:
             if os.path.isabs(self.topsrcdir):
                 top_srcdir = self.topsrcdir.replace(os.sep, '/')
             else:

python/mozbuild/mozbuild/test/backend/test_fastermake.py

@@ -4,10 +4,7 @@
 
 from __future__ import unicode_literals
 
-import cPickle as pickle
-import json
 import os
-import unittest
 
 from mozpack.copier import FileRegistry
 from mozpack.manifests import InstallManifest

python/mozbuild/mozbuild/test/backend/test_gn_processor.py

@@ -21,7 +21,6 @@ from mozbuild.gn_processor import (
     GnMozbuildWriterBackend,
     find_common_attrs,
 )
-from mozbuild.backend.recursivemake import RecursiveMakeBackend
 
 from mozbuild.frontend.data import (
     ComputedFlags,

python/mozbuild/mozbuild/test/backend/test_partialconfigenvironment.py

@@ -61,7 +61,7 @@ class TestPartial(unittest.TestCase):
         myconfig = config.copy()
         env.write_vars(myconfig)
         with self.assertRaises(KeyError):
-            x = env.substs['MYSUBST']
+            _ = env.substs['MYSUBST']
         self.assertFalse(os.path.exists(path))
 
         myconfig['substs']['MYSUBST'] = 'new'
@@ -73,7 +73,7 @@ class TestPartial(unittest.TestCase):
         del myconfig['substs']['MYSUBST']
         env.write_vars(myconfig)
         with self.assertRaises(KeyError):
-            x = env.substs['MYSUBST']
+            _ = env.substs['MYSUBST']
         # Now that the subst is gone, the file still needs to be present so that
         # make can update dependencies correctly. Overwriting the file with
         # 'None' is the same as deleting it as far as the
@@ -107,7 +107,7 @@ class TestPartial(unittest.TestCase):
         self._assert_deps(env, ['defines/MOZ_FOO', 'defines/MOZ_BAR', 'substs/MOZ_SUBST_1'])
 
         with self.assertRaises(KeyError):
-            x = env.substs['NON_EXISTENT']
+            _ = env.substs['NON_EXISTENT']
         self._assert_deps(env, ['defines/MOZ_FOO', 'defines/MOZ_BAR',
                                 'substs/MOZ_SUBST_1', 'substs/NON_EXISTENT'])
         self.assertEqual(env.substs.get('NON_EXISTENT'), None)

python/mozbuild/mozbuild/test/backend/test_recursivemake.py

@@ -5,7 +5,6 @@
 from __future__ import unicode_literals
 
 import cPickle as pickle
-import json
 import os
 import unittest
 
@@ -408,7 +407,7 @@ class TestRecursiveMakeBackend(BackendTester):
             'EXTRA_MDDEPEND_FILES += bar.c.pp',
             '$(MDDEPDIR)/bar.c.stub: %s/generate-bar.py' % env.topsrcdir,
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,%s/generate-bar.py baz bar.c $(MDDEPDIR)/bar.c.pp $(MDDEPDIR)/bar.c.stub)' % env.topsrcdir,
+            '$(call py_action,file_generate,%s/generate-bar.py baz bar.c $(MDDEPDIR)/bar.c.pp $(MDDEPDIR)/bar.c.stub)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'export:: $(MDDEPDIR)/foo.c.stub',
@@ -418,7 +417,7 @@ class TestRecursiveMakeBackend(BackendTester):
             'EXTRA_MDDEPEND_FILES += foo.c.pp',
             '$(MDDEPDIR)/foo.c.stub: %s/generate-foo.py $(srcdir)/foo-data' % (env.topsrcdir),
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,%s/generate-foo.py main foo.c $(MDDEPDIR)/foo.c.pp $(MDDEPDIR)/foo.c.stub $(srcdir)/foo-data)' % (env.topsrcdir),
+            '$(call py_action,file_generate,%s/generate-foo.py main foo.c $(MDDEPDIR)/foo.c.pp $(MDDEPDIR)/foo.c.stub $(srcdir)/foo-data)' % (env.topsrcdir),  # noqa
             '@$(TOUCH) $@',
             '',
         ]
@@ -441,7 +440,7 @@ class TestRecursiveMakeBackend(BackendTester):
             'EXTRA_MDDEPEND_FILES += bar.c.pp',
             '$(MDDEPDIR)/bar.c.stub: %s/generate-bar.py FORCE' % env.topsrcdir,
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,%s/generate-bar.py baz bar.c $(MDDEPDIR)/bar.c.pp $(MDDEPDIR)/bar.c.stub)' % env.topsrcdir,
+            '$(call py_action,file_generate,%s/generate-bar.py baz bar.c $(MDDEPDIR)/bar.c.pp $(MDDEPDIR)/bar.c.stub)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'export:: $(MDDEPDIR)/foo.c.stub',
@@ -451,7 +450,7 @@ class TestRecursiveMakeBackend(BackendTester):
             'EXTRA_MDDEPEND_FILES += foo.c.pp',
             '$(MDDEPDIR)/foo.c.stub: %s/generate-foo.py $(srcdir)/foo-data' % (env.topsrcdir),
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,%s/generate-foo.py main foo.c $(MDDEPDIR)/foo.c.pp $(MDDEPDIR)/foo.c.stub $(srcdir)/foo-data)' % (env.topsrcdir),
+            '$(call py_action,file_generate,%s/generate-foo.py main foo.c $(MDDEPDIR)/foo.c.pp $(MDDEPDIR)/foo.c.stub $(srcdir)/foo-data)' % (env.topsrcdir),  # noqa
             '@$(TOUCH) $@',
             '',
         ]
@@ -472,9 +471,9 @@ class TestRecursiveMakeBackend(BackendTester):
             'GARBAGE += foo.xyz',
             'GARBAGE += $(MDDEPDIR)/foo.xyz.stub',
             'EXTRA_MDDEPEND_FILES += foo.xyz.pp',
-            '$(MDDEPDIR)/foo.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,
+            '$(MDDEPDIR)/foo.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo.xyz $(MDDEPDIR)/foo.xyz.pp $(MDDEPDIR)/foo.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo.xyz $(MDDEPDIR)/foo.xyz.pp $(MDDEPDIR)/foo.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'LOCALIZED_FILES_0_FILES += foo.xyz',
@@ -499,9 +498,9 @@ class TestRecursiveMakeBackend(BackendTester):
             'GARBAGE += foo.xyz',
             'GARBAGE += $(MDDEPDIR)/foo.xyz.stub',
             'EXTRA_MDDEPEND_FILES += foo.xyz.pp',
-            '$(MDDEPDIR)/foo.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,
+            '$(MDDEPDIR)/foo.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo.xyz $(MDDEPDIR)/foo.xyz.pp $(MDDEPDIR)/foo.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo.xyz $(MDDEPDIR)/foo.xyz.pp $(MDDEPDIR)/foo.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'libs:: $(MDDEPDIR)/abc.xyz.stub',
@@ -509,9 +508,9 @@ class TestRecursiveMakeBackend(BackendTester):
             'GARBAGE += abc.xyz',
             'GARBAGE += $(MDDEPDIR)/abc.xyz.stub',
             'EXTRA_MDDEPEND_FILES += abc.xyz.pp',
-            '$(MDDEPDIR)/abc.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input FORCE' % env.topsrcdir,
+            '$(MDDEPDIR)/abc.xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input FORCE' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main abc.xyz $(MDDEPDIR)/abc.xyz.pp $(MDDEPDIR)/abc.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main abc.xyz $(MDDEPDIR)/abc.xyz.pp $(MDDEPDIR)/abc.xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
         ]
@@ -533,9 +532,9 @@ class TestRecursiveMakeBackend(BackendTester):
             'GARBAGE += foo$(AB_CD).xyz',
             'GARBAGE += $(MDDEPDIR)/foo$(AB_CD).xyz.stub',
             'EXTRA_MDDEPEND_FILES += foo$(AB_CD).xyz.pp',
-            '$(MDDEPDIR)/foo$(AB_CD).xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,
+            '$(MDDEPDIR)/foo$(AB_CD).xyz.stub: %s/generate-foo.py $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo$(AB_CD).xyz $(MDDEPDIR)/foo$(AB_CD).xyz.pp $(MDDEPDIR)/foo$(AB_CD).xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main foo$(AB_CD).xyz $(MDDEPDIR)/foo$(AB_CD).xyz.pp $(MDDEPDIR)/foo$(AB_CD).xyz.stub $(call MERGE_FILE,localized-input) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'include $(topsrcdir)/config/AB_rCD.mk',
@@ -543,18 +542,18 @@ class TestRecursiveMakeBackend(BackendTester):
             'GARBAGE += bar$(AB_rCD).xyz',
             'GARBAGE += $(MDDEPDIR)/bar$(AB_rCD).xyz.stub',
             'EXTRA_MDDEPEND_FILES += bar$(AB_rCD).xyz.pp',
-            '$(MDDEPDIR)/bar$(AB_rCD).xyz.stub: %s/generate-foo.py $(call MERGE_RELATIVE_FILE,localized-input,inner/locales) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,
+            '$(MDDEPDIR)/bar$(AB_rCD).xyz.stub: %s/generate-foo.py $(call MERGE_RELATIVE_FILE,localized-input,inner/locales) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main bar$(AB_rCD).xyz $(MDDEPDIR)/bar$(AB_rCD).xyz.pp $(MDDEPDIR)/bar$(AB_rCD).xyz.stub $(call MERGE_RELATIVE_FILE,localized-input,inner/locales) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main bar$(AB_rCD).xyz $(MDDEPDIR)/bar$(AB_rCD).xyz.pp $(MDDEPDIR)/bar$(AB_rCD).xyz.stub $(call MERGE_RELATIVE_FILE,localized-input,inner/locales) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
             'zot$(AB_rCD).xyz: $(MDDEPDIR)/zot$(AB_rCD).xyz.stub ;',
             'GARBAGE += zot$(AB_rCD).xyz',
             'GARBAGE += $(MDDEPDIR)/zot$(AB_rCD).xyz.stub',
             'EXTRA_MDDEPEND_FILES += zot$(AB_rCD).xyz.pp',
-            '$(MDDEPDIR)/zot$(AB_rCD).xyz.stub: %s/generate-foo.py $(call MERGE_RELATIVE_FILE,localized-input,locales) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,
+            '$(MDDEPDIR)/zot$(AB_rCD).xyz.stub: %s/generate-foo.py $(call MERGE_RELATIVE_FILE,localized-input,locales) $(srcdir)/non-localized-input $(if $(IS_LANGUAGE_REPACK),FORCE)' % env.topsrcdir,  # noqa
             '$(REPORT_BUILD)',
-            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main zot$(AB_rCD).xyz $(MDDEPDIR)/zot$(AB_rCD).xyz.pp $(MDDEPDIR)/zot$(AB_rCD).xyz.stub $(call MERGE_RELATIVE_FILE,localized-input,locales) $(srcdir)/non-localized-input)' % env.topsrcdir,
+            '$(call py_action,file_generate,--locale=$(AB_CD) %s/generate-foo.py main zot$(AB_rCD).xyz $(MDDEPDIR)/zot$(AB_rCD).xyz.pp $(MDDEPDIR)/zot$(AB_rCD).xyz.stub $(call MERGE_RELATIVE_FILE,localized-input,locales) $(srcdir)/non-localized-input)' % env.topsrcdir,  # noqa
             '@$(TOUCH) $@',
             '',
         ]
@@ -757,7 +756,8 @@ class TestRecursiveMakeBackend(BackendTester):
             self.assertEqual(m, m2)
 
     def test_ipdl_sources(self):
-        """Test that PREPROCESSED_IPDL_SOURCES and IPDL_SOURCES are written to ipdlsrcs.mk correctly."""
+        """Test that PREPROCESSED_IPDL_SOURCES and IPDL_SOURCES are written to
+        ipdlsrcs.mk correctly."""
         env = self._get_environment('ipdl_sources')
 
         # Make substs writable so we can set the value of IPDL_ROOT to reflect
@@ -774,8 +774,7 @@ class TestRecursiveMakeBackend(BackendTester):
         topsrcdir = env.topsrcdir.replace(os.sep, '/')
 
         expected = [
-            "ALL_IPDLSRCS := bar1.ipdl foo1.ipdl %s/bar/bar.ipdl %s/bar/bar2.ipdlh %s/foo/foo.ipdl %s/foo/foo2.ipdlh" % tuple([
-                                                                                                                              topsrcdir] * 4),
+            "ALL_IPDLSRCS := bar1.ipdl foo1.ipdl %s/bar/bar.ipdl %s/bar/bar2.ipdlh %s/foo/foo.ipdl %s/foo/foo2.ipdlh" % tuple([topsrcdir] * 4),  # noqa
             "CPPSRCS := UnifiedProtocols0.cpp",
             "IPDLDIRS := %s %s/bar %s/foo" % (env.topobjdir, topsrcdir, topsrcdir),
         ]
@@ -820,8 +819,6 @@ class TestRecursiveMakeBackend(BackendTester):
         backend_path = mozpath.join(env.topobjdir, 'backend.mk')
         lines = [l.strip() for l in open(backend_path, 'rt').readlines()[2:]]
 
-        topobjdir = env.topobjdir.replace('\\', '/')
-
         expected = [
             'LOCAL_INCLUDES += -I$(CURDIR)/bar/baz',
             'LOCAL_INCLUDES += -I$(CURDIR)/foo',
@@ -840,7 +837,7 @@ class TestRecursiveMakeBackend(BackendTester):
                  if not l.startswith('COMPUTED_')]
 
         expected = [
-            'RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libtest_library.a' % env.topobjdir,
+            'RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libtest_library.a' % env.topobjdir,  # noqa
             'CARGO_FILE := $(srcdir)/Cargo.toml',
             'CARGO_TARGET_DIR := %s' % env.topobjdir,
         ]
@@ -857,7 +854,7 @@ class TestRecursiveMakeBackend(BackendTester):
                  if not l.startswith('COMPUTED_')]
 
         expected = [
-            'HOST_RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libhostrusttool.a' % env.topobjdir,
+            'HOST_RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libhostrusttool.a' % env.topobjdir,  # noqa
             'CARGO_FILE := $(srcdir)/Cargo.toml',
             'CARGO_TARGET_DIR := %s' % env.topobjdir,
         ]
@@ -874,7 +871,7 @@ class TestRecursiveMakeBackend(BackendTester):
                  if not l.startswith('COMPUTED_')]
 
         expected = [
-            'HOST_RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libhostrusttool.a' % env.topobjdir,
+            'HOST_RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libhostrusttool.a' % env.topobjdir,  # noqa
             'CARGO_FILE := $(srcdir)/Cargo.toml',
             'CARGO_TARGET_DIR := %s' % env.topobjdir,
             'HOST_RUST_LIBRARY_FEATURES := musthave cantlivewithout',
@@ -892,7 +889,7 @@ class TestRecursiveMakeBackend(BackendTester):
                  if not l.startswith('COMPUTED_')]
 
         expected = [
-            'RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libfeature_library.a' % env.topobjdir,
+            'RUST_LIBRARY_FILE := %s/x86_64-unknown-linux-gnu/release/libfeature_library.a' % env.topobjdir,  # noqa
             'CARGO_FILE := $(srcdir)/Cargo.toml',
             'CARGO_TARGET_DIR := %s' % env.topobjdir,
             'RUST_LIBRARY_FEATURES := musthave cantlivewithout',
@@ -929,7 +926,7 @@ class TestRecursiveMakeBackend(BackendTester):
         """Test that FINAL_TARGET is written to backend.mk correctly."""
         env = self._consume('final_target', RecursiveMakeBackend)
 
-        final_target_rule = "FINAL_TARGET = $(if $(XPI_NAME),$(DIST)/xpi-stage/$(XPI_NAME),$(DIST)/bin)$(DIST_SUBDIR:%=/%)"
+        final_target_rule = "FINAL_TARGET = $(if $(XPI_NAME),$(DIST)/xpi-stage/$(XPI_NAME),$(DIST)/bin)$(DIST_SUBDIR:%=/%)"  # noqa
         expected = dict()
         expected[env.topobjdir] = []
         expected[mozpath.join(env.topobjdir, 'both')] = [

python/mozbuild/mozbuild/test/codecoverage/test_lcov_rewrite.py

@@ -3,7 +3,6 @@
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
-import subprocess
 import unittest
 import shutil
 from StringIO import StringIO
@@ -287,7 +286,8 @@ class TestUrlFinder(unittest.TestCase):
                 ],
             },
             {
-                'chrome://global/content/netError.xhtml': 'chrome://browser/content/aboutNetError.xhtml',
+                'chrome://global/content/netError.xhtml':
+                    'chrome://browser/content/aboutNetError.xhtml',
             },
             {
                 'dist/bin/components/MainProcessSingleton.js': [
@@ -345,9 +345,6 @@ class TestUrlFinder(unittest.TestCase):
             self.assertEqual(url_finder.rewrite_url(path)[0], expected)
 
     def test_wrong_scheme_paths(self):
-        app_name = buildconfig.substs.get('MOZ_APP_NAME')
-        omnijar_name = buildconfig.substs.get('OMNIJAR_NAME')
-
         paths = [
             'http://www.mozilla.org/aFile.js',
             'https://www.mozilla.org/aFile.js',
@@ -376,7 +373,7 @@ class TestUrlFinder(unittest.TestCase):
             # Path which ends with > Function
             ('resource://gre/modules/osfile/osfile_async_worker.js line 3 > Function', None),
             # Path which contains "->"
-            ('resource://gre/modules/addons/XPIProvider.jsm -> resource://gre/modules/osfile/osfile_async_worker.js',
+            ('resource://gre/modules/addons/XPIProvider.jsm -> resource://gre/modules/osfile/osfile_async_worker.js',  # noqa
              ('toolkit/components/osfile/modules/osfile_async_worker.js', None)),
             # Path with pp_info
             ('resource://gre/modules/AppConstants.jsm', ('toolkit/modules/AppConstants.jsm', {

python/mozbuild/mozbuild/test/configure/lint.py

@@ -6,7 +6,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 
 import os
 import unittest
-from StringIO import StringIO
 from mozunit import main
 from buildconfig import (
     topobjdir,

python/mozbuild/mozbuild/test/configure/test_checks_configure.py

@@ -474,7 +474,8 @@ class TestChecksConfigure(unittest.TestCase):
         self.assertEqual(status, 1)
         self.assertEqual(config, {})
         self.assertEqual(out, textwrap.dedent('''\
-            checking for a... 
+            checking for a... '''  # noqa  # trailing whitespace...
+                '''
             DEBUG: a: Trying known-a
             ERROR: Paths provided to find_program must be a list of strings, not %r
         ''' % mozpath.dirname(self.OTHER_A)))
@@ -620,8 +621,11 @@ class TestChecksConfigure(unittest.TestCase):
         self.assertEqual(out, textwrap.dedent('''\
              checking for java... %s
              checking for jarsigner... not found
-             ERROR: The program jarsigner was not found.  Set $JAVA_HOME to your Java SDK directory or use '--with-java-bin-path={java-bin-dir}'
-        ''' % (java)))
+             ERROR: The program jarsigner was not found.  Set $JAVA_HOME to your \
+Java SDK directory or use '--with-java-bin-path={java-bin-dir}'
+        ''' % (java)
+            ),
+        )
 
     def test_pkg_check_modules(self):
         mock_pkg_config_version = '0.10.0'
@@ -664,7 +668,6 @@ class TestChecksConfigure(unittest.TestCase):
         extra_paths = {
             mock_pkg_config_path: mock_pkg_config,
         }
-        includes = ('util.configure', 'checks.configure', 'pkg.configure')
 
         config, output, status = get_result("pkg_check_modules('MOZ_VALID', 'valid')")
         self.assertEqual(status, 1)

python/mozbuild/mozbuild/test/configure/test_configure.py

@@ -639,18 +639,20 @@ class TestConfigure(unittest.TestCase):
             mozpath.join(test_data_path, 'imply_option', 'imm.configure'))
 
         with self.assertRaisesRegexp(InvalidOptionError,
-                                     "--enable-foo' implied by 'imply_option at %s:7' conflicts with "
-                                     "'--disable-foo' from the command-line" % config_path):
+                                     "--enable-foo' implied by 'imply_option at %s:7' conflicts "
+                                     "with '--disable-foo' from the command-line" % config_path):
             get_config(['--disable-foo'])
 
         with self.assertRaisesRegexp(InvalidOptionError,
-                                     "--enable-bar=foo,bar' implied by 'imply_option at %s:16' conflicts"
-                                     " with '--enable-bar=a,b,c' from the command-line" % config_path):
+                                     "--enable-bar=foo,bar' implied by 'imply_option at %s:16' "
+                                     "conflicts with '--enable-bar=a,b,c' from the command-line"
+                                     % config_path):
             get_config(['--enable-bar=a,b,c'])
 
         with self.assertRaisesRegexp(InvalidOptionError,
-                                     "--enable-baz=BAZ' implied by 'imply_option at %s:25' conflicts"
-                                     " with '--enable-baz=QUUX' from the command-line" % config_path):
+                                     "--enable-baz=BAZ' implied by 'imply_option at %s:25' "
+                                     "conflicts with '--enable-baz=QUUX' from the command-line"
+                                     % config_path):
             get_config(['--enable-baz=QUUX'])
 
     def test_imply_option_failures(self):
@@ -810,17 +812,17 @@ class TestConfigure(unittest.TestCase):
             # imply_options resolve to None, which disables the imply_option.
 
             with self.assertRaises(ConfigureError) as e:
-                config = self.get_config()
+                self.get_config()
 
             self.assertEquals(e.exception.message, message)
 
             with self.assertRaises(ConfigureError) as e:
-                config = self.get_config(['--with-qux'])
+                self.get_config(['--with-qux'])
 
             self.assertEquals(e.exception.message, message)
 
             with self.assertRaises(ConfigureError) as e:
-                config = self.get_config(['--without-foo', '--with-qux'])
+                self.get_config(['--without-foo', '--with-qux'])
 
             self.assertEquals(e.exception.message, message)
 

python/mozbuild/mozbuild/test/configure/test_lint.py

@@ -4,7 +4,6 @@
 
 from __future__ import absolute_import, print_function, unicode_literals
 
-from StringIO import StringIO
 import contextlib
 import os
 import sys

python/mozbuild/mozbuild/test/configure/test_moz_configure.py

@@ -4,8 +4,6 @@
 
 from __future__ import absolute_import, print_function, unicode_literals
 
-import sys
-
 from mozunit import main
 from mozbuild.util import (
     exec_,
@@ -156,10 +154,10 @@ class TestMozConfigure(BaseConfigureTest):
                 {'PATH': '/usr/bin', 'MAKENSISU': '/usr/bin/makensis'})
             return sandbox._value_for(sandbox['nsis_version'])
 
-        with self.assertRaises(SystemExit) as e:
+        with self.assertRaises(SystemExit):
             check_nsis_version('v2.5')
 
-        with self.assertRaises(SystemExit) as e:
+        with self.assertRaises(SystemExit):
             check_nsis_version('v3.0a2')
 
         self.assertEquals(check_nsis_version('v3.0b1'), '3.0b1')

python/mozbuild/mozbuild/test/configure/test_options.py

@@ -875,14 +875,18 @@ class TestCommandLineHelper(unittest.TestCase):
 
         bar = Option('--bar',
                      possible_origins=('mozconfig',))
-        with self.assertRaisesRegexp(InvalidOptionError,
-                                     "--bar can not be set by command-line. Values are accepted from: mozconfig"):
+        with self.assertRaisesRegexp(
+            InvalidOptionError,
+            "--bar can not be set by command-line. Values are accepted from: mozconfig"
+        ):
             helper.handle(bar)
 
         baz = Option(env='BAZ',
                      possible_origins=('implied',))
-        with self.assertRaisesRegexp(InvalidOptionError,
-                                     "BAZ=1 can not be set by environment. Values are accepted from: implied"):
+        with self.assertRaisesRegexp(
+            InvalidOptionError,
+            "BAZ=1 can not be set by environment. Values are accepted from: implied"
+        ):
             helper.handle(baz)
 
 

python/mozbuild/mozbuild/test/configure/test_toolkit_moz_configure.py

@@ -120,7 +120,8 @@ class TestToolkitMozConfigure(BaseConfigureTest):
 
         self.assertEqual(
             out.getvalue(),
-            'ERROR: Yasm is required to build with vpx, but you do not appear to have Yasm installed.\n'
+            ('ERROR: Yasm is required to build with vpx, but you do not appear '
+             'to have Yasm installed.\n'),
         )
 
         out.truncate(0)
@@ -129,7 +130,8 @@ class TestToolkitMozConfigure(BaseConfigureTest):
 
         self.assertEqual(
             out.getvalue(),
-            'ERROR: Yasm is required to build with jpeg and vpx, but you do not appear to have Yasm installed.\n'
+            ('ERROR: Yasm is required to build with jpeg and vpx, but you do not appear '
+             'to have Yasm installed.\n'),
         )
 
         out.truncate(0)
@@ -138,7 +140,8 @@ class TestToolkitMozConfigure(BaseConfigureTest):
 
         self.assertEqual(
             out.getvalue(),
-            'ERROR: Yasm is required to build with jpeg, libav and vpx, but you do not appear to have Yasm installed.\n'
+            ('ERROR: Yasm is required to build with jpeg, libav and vpx, but you do not appear '
+             'to have Yasm installed.\n'),
         )
 
         out.truncate(0)

python/mozbuild/mozbuild/test/frontend/test_emitter.py

@@ -14,7 +14,6 @@ from mozbuild.frontend.context import (
     Path,
 )
 from mozbuild.frontend.data import (
-    ChromeManifestEntry,
     ComputedFlags,
     ConfigFileSubstitution,
     Defines,
@@ -23,7 +22,6 @@ from mozbuild.frontend.data import (
     FinalTargetPreprocessedFiles,
     GeneratedFile,
     GeneratedSources,
-    HostDefines,
     HostProgram,
     HostRustLibrary,
     HostRustProgram,
@@ -52,7 +50,6 @@ from mozbuild.frontend.reader import (
     BuildReaderError,
     SandboxValidationError,
 )
-from mozpack.chrome import manifest
 
 from mozbuild.test.common import MockConfig
 
@@ -533,18 +530,22 @@ class TestEmitterBasic(unittest.TestCase):
         LOCALIZED_FILES as an objdir path produces an error.
         """
         reader = self.reader('localized-files-not-localized-generated')
-        with self.assertRaisesRegexp(SandboxValidationError,
-                                     'Objdir file listed in LOCALIZED_FILES not in LOCALIZED_GENERATED_FILES:'):
-            objs = self.read_topsrcdir(reader)
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'Objdir file listed in LOCALIZED_FILES not in LOCALIZED_GENERATED_FILES:'
+        ):
+            self.read_topsrcdir(reader)
 
     def test_localized_generated_files_final_target_files(self):
         """Test that using LOCALIZED_GENERATED_FILES and then putting the output in
         FINAL_TARGET_FILES as an objdir path produces an error.
         """
         reader = self.reader('localized-generated-files-final-target-files')
-        with self.assertRaisesRegexp(SandboxValidationError,
-                                     'Outputs of LOCALIZED_GENERATED_FILES cannot be used in FINAL_TARGET_FILES:'):
-            objs = self.read_topsrcdir(reader)
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'Outputs of LOCALIZED_GENERATED_FILES cannot be used in FINAL_TARGET_FILES:'
+        ):
+            self.read_topsrcdir(reader)
 
     def test_generated_files_method_names(self):
         reader = self.reader('generated-files-method-names')
@@ -748,8 +749,11 @@ class TestEmitterBasic(unittest.TestCase):
         """
         reader = self.reader('test-manifest-dupes')
 
-        with self.assertRaisesRegexp(SandboxValidationError, 'bar.js appears multiple times '
-                                     'in a test manifest under a support-files field, please omit the duplicate entry.'):
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'bar.js appears multiple times '
+            'in a test manifest under a support-files field, please omit the duplicate entry.'
+        ):
             self.read_topsrcdir(reader)
 
     def test_test_manifest_absolute_support_files(self):
@@ -1056,7 +1060,7 @@ class TestEmitterBasic(unittest.TestCase):
                 SandboxValidationError,
                 'Path specified in LOCAL_INCLUDES.*resolves to the '
                 'topsrcdir or topobjdir'):
-            objs = self.read_topsrcdir(reader)
+            self.read_topsrcdir(reader)
 
         reader = self.reader('local_includes-invalid/objdir')
 
@@ -1064,7 +1068,7 @@ class TestEmitterBasic(unittest.TestCase):
                 SandboxValidationError,
                 'Path specified in LOCAL_INCLUDES.*resolves to the '
                 'topsrcdir or topobjdir'):
-            objs = self.read_topsrcdir(reader)
+            self.read_topsrcdir(reader)
 
     def test_local_includes_file(self):
         """Test that a filename can't be used in LOCAL_INCLUDES."""
@@ -1073,7 +1077,7 @@ class TestEmitterBasic(unittest.TestCase):
         with self.assertRaisesRegexp(
                 SandboxValidationError,
                 'Path specified in LOCAL_INCLUDES is a filename'):
-            objs = self.read_topsrcdir(reader)
+            self.read_topsrcdir(reader)
 
     def test_generated_includes(self):
         """Test that GENERATED_INCLUDES is emitted correctly."""
@@ -1420,8 +1424,10 @@ class TestEmitterBasic(unittest.TestCase):
     def test_final_target_pp_files_non_srcdir(self):
         '''Test that non-srcdir paths in FINAL_TARGET_PP_FILES throws errors.'''
         reader = self.reader('final-target-pp-files-non-srcdir')
-        with self.assertRaisesRegexp(SandboxValidationError,
-                                     'Only source directory paths allowed in FINAL_TARGET_PP_FILES:'):
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'Only source directory paths allowed in FINAL_TARGET_PP_FILES:'
+        ):
             self.read_topsrcdir(reader)
 
     def test_localized_files(self):
@@ -1444,9 +1450,11 @@ class TestEmitterBasic(unittest.TestCase):
         """Test that LOCALIZED_FILES errors if a path does not start with
         `en-US/` or contain `locales/en-US/`."""
         reader = self.reader('localized-files-no-en-us')
-        with self.assertRaisesRegexp(SandboxValidationError,
-                                     'LOCALIZED_FILES paths must start with `en-US/` or contain `locales/en-US/`: foo.js'):
-            objs = self.read_topsrcdir(reader)
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'LOCALIZED_FILES paths must start with `en-US/` or contain `locales/en-US/`: foo.js'
+        ):
+            self.read_topsrcdir(reader)
 
     def test_localized_pp_files(self):
         """Test that LOCALIZED_PP_FILES works properly."""
@@ -1665,8 +1673,10 @@ class TestEmitterBasic(unittest.TestCase):
         from GENERATED_FILES is an error.
         """
         reader = self.reader('test-symbols-file-objdir-missing-generated')
-        with self.assertRaisesRegexp(SandboxValidationError,
-                                     'Objdir file specified in SYMBOLS_FILE not in GENERATED_FILES:'):
+        with self.assertRaisesRegexp(
+            SandboxValidationError,
+            'Objdir file specified in SYMBOLS_FILE not in GENERATED_FILES:'
+        ):
             self.read_topsrcdir(reader)
 
 

python/mozbuild/mozbuild/test/frontend/test_reader.py

@@ -247,7 +247,7 @@ class TestBuildReader(unittest.TestCase):
     def test_error_error_func_ok(self):
         reader = self.reader('reader-error-error-func', error_is_fatal=False)
 
-        contexts = list(reader.read_topsrcdir())
+        list(reader.read_topsrcdir())
 
     def test_error_empty_list(self):
         reader = self.reader('reader-error-empty-list')

python/mozbuild/mozbuild/test/frontend/test_sandbox.py

@@ -4,8 +4,6 @@
 
 from __future__ import unicode_literals
 
-import os
-import shutil
 import unittest
 
 from mozunit import main
@@ -30,7 +28,6 @@ from mozbuild.frontend.context import (
 )
 
 from mozbuild.test.common import MockConfig
-from types import StringTypes
 
 import mozpack.path as mozpath
 

python/mozbuild/mozbuild/test/test_android_version_code.py

@@ -49,7 +49,8 @@ class TestAndroidVersionCode(unittest.TestCase):
         self.assertTrue('underflow' in cm.exception.message)
 
     def test_android_version_code_v1_running_low(self):
-        '''Verify there is an informative message if one asks for v1 codes that are close to overflow.'''
+        '''Verify there is an informative message if one asks for v1
+        codes that are close to overflow.'''
         with self.assertRaises(ValueError) as cm:
             overflow = '20290801000000'
             android_version_code_v1(overflow, cpu_arch='armeabi', min_sdk=9, max_sdk=None)
@@ -65,8 +66,9 @@ class TestAndroidVersionCode(unittest.TestCase):
     def test_android_version_code_v0_relative_v1(self):
         '''Verify that the first v1 code is greater than the equivalent v0 code.'''
         buildid = '20150801000000'
-        self.assertGreater(android_version_code_v1(buildid, cpu_arch='armeabi', min_sdk=9, max_sdk=None),
-                           android_version_code_v0(buildid, cpu_arch='armeabi', min_sdk=9, max_sdk=None))
+        self.assertGreater(
+            android_version_code_v1(buildid, cpu_arch='armeabi', min_sdk=9, max_sdk=None),
+            android_version_code_v0(buildid, cpu_arch='armeabi', min_sdk=9, max_sdk=None))
 
 
 if __name__ == '__main__':

python/mozbuild/mozbuild/test/test_base.py

@@ -23,7 +23,6 @@ from mozbuild.base import (
     BadEnvironmentException,
     MachCommandBase,
     MozbuildObject,
-    ObjdirMismatchException,
     PathArgument,
 )
 

python/mozbuild/mozbuild/test/test_containers.py

@@ -30,7 +30,7 @@ class TestReadOnlyNamespace(unittest.TestCase):
             ['bar', 'foo'])
 
         with self.assertRaises(AttributeError):
-            value = test.missing
+            test.missing
 
         with self.assertRaises(Exception):
             test.foo = 2
@@ -56,7 +56,7 @@ class TestReadOnlyDict(unittest.TestCase):
         self.assertEqual(test['foo'], 1)
 
         with self.assertRaises(KeyError):
-            value = test['missing']
+            test['missing']
 
         with self.assertRaises(Exception):
             test['baz'] = True

python/mozbuild/mozbuild/test/test_expression.py

@@ -1,7 +1,5 @@
 import unittest
 
-import sys
-import os.path
 import mozunit
 
 from mozbuild.preprocessor import Expression, Context

python/mozbuild/mozbuild/test/test_jarmaker.py

@@ -8,8 +8,6 @@ import unittest
 import os
 import sys
 import os.path
-import time
-import inspect
 from filecmp import dircmp
 from tempfile import mkdtemp
 from shutil import rmtree, copy2

python/mozbuild/mozbuild/test/test_licenses.py

@@ -1,13 +1,7 @@
 import unittest
 
-from StringIO import StringIO
-import os
-import sys
-import os.path
 import mozunit
 
-from mozbuild.preprocessor import Preprocessor
-
 from mozbuild.vendor_rust import VendorRust
 
 

python/mozbuild/mozbuild/test/test_line_endings.py

@@ -2,7 +2,6 @@ import unittest
 
 from StringIO import StringIO
 import os
-import sys
 import os.path
 import mozunit
 

python/mozbuild/mozbuild/test/test_mozconfig.py

@@ -139,7 +139,6 @@ class TestMozconfigLoader(unittest.TestCase):
 
         srcdir = self.get_temp_dir()
         curdir = self.get_temp_dir()
-        dirs = [srcdir, curdir]
         loader = MozconfigLoader(srcdir)
 
         path = os.path.join(srcdir, relative_mozconfig)

python/mozbuild/mozbuild/test/test_util.py

@@ -277,24 +277,24 @@ class TestHierarchicalStringList(unittest.TestCase):
                          "<type 'bool'>")
 
     def test_del_exports(self):
-        with self.assertRaises(MozbuildDeletionError) as mde:
+        with self.assertRaises(MozbuildDeletionError):
             self.EXPORTS.foo += ['bar.h']
             del self.EXPORTS.foo
 
     def test_unsorted(self):
-        with self.assertRaises(UnsortedError) as ee:
+        with self.assertRaises(UnsortedError):
             self.EXPORTS += ['foo.h', 'bar.h']
 
-        with self.assertRaises(UnsortedError) as ee:
+        with self.assertRaises(UnsortedError):
             self.EXPORTS.foo = ['foo.h', 'bar.h']
 
-        with self.assertRaises(UnsortedError) as ee:
+        with self.assertRaises(UnsortedError):
             self.EXPORTS.foo += ['foo.h', 'bar.h']
 
     def test_reassign(self):
         self.EXPORTS.foo = ['foo.h']
 
-        with self.assertRaises(KeyError) as ee:
+        with self.assertRaises(KeyError):
             self.EXPORTS.foo = ['bar.h']
 
     def test_walk(self):
@@ -503,7 +503,7 @@ class TestStrictOrderingOnAppendListWithFlagsFactory(unittest.TestCase):
             l['a'] = 'foo'
 
         with self.assertRaises(Exception):
-            c = l['c']
+            l['c']
 
         self.assertEqual(l['a'].foo, False)
         l['a'].foo = True

python/mozbuild/mozbuild/testing.py

@@ -134,8 +134,9 @@ class SupportFilesConverter(object):
                 # directory for the benefit of tests specifying 'install-to-subdir'.
                 key = field, pattern, out_dir
                 if key in info.seen:
-                    raise ValueError("%s appears multiple times in a test manifest under a %s field,"
-                                     " please omit the duplicate entry." % (pattern, field))
+                    raise ValueError(
+                        "%s appears multiple times in a test manifest under a %s field,"
+                        " please omit the duplicate entry." % (pattern, field))
                 info.seen.add(key)
                 if key in seen:
                     continue

python/mozbuild/mozbuild/util.py

@@ -23,7 +23,6 @@ import time
 import types
 
 from collections import (
-    defaultdict,
     Iterable,
     OrderedDict,
 )
@@ -661,8 +660,10 @@ def StrictOrderingOnAppendListWithFlagsFactory(flags):
                                  (self._flags_type._flags, other._flags_type._flags))
             intersection = set(self._flags.keys()) & set(other._flags.keys())
             if intersection:
-                raise ValueError('Cannot update flags: both lists of strings with flags configure %s' %
-                                 intersection)
+                raise ValueError(
+                    'Cannot update flags: both lists of strings with flags configure %s' %
+                    intersection
+                    )
             self._flags.update(other._flags)
 
         def extend(self, l):

python/mozbuild/mozbuild/vendor_aom.py

@@ -4,10 +4,8 @@
 
 from __future__ import absolute_import, print_function, unicode_literals
 
-from distutils.version import LooseVersion
 import logging
 from mozbuild.base import (
-    BuildEnvironmentNotFoundException,
     MozbuildObject,
 )
 import mozfile
@@ -63,7 +61,7 @@ Please set a repository url with --repo on either googlesource or github.''' % h
         req.raise_for_status()
         try:
             info = req.json()
-        except ValueError as e:
+        except ValueError:
             # As of 2017 May, googlesource sends 4 garbage characters
             # at the beginning of the json response. Work around this.
             # https://bugs.chromium.org/p/chromium/issues/detail?id=718550

python/mozbuild/mozbuild/vendor_dav1d.py

@@ -4,10 +4,8 @@
 
 from __future__ import absolute_import, print_function, unicode_literals
 
-from distutils.version import LooseVersion
 import logging
 from mozbuild.base import (
-    BuildEnvironmentNotFoundException,
     MozbuildObject,
 )
 import mozfile
@@ -52,7 +50,7 @@ Please set a repository url with --repo on either googlesource or github.''' % h
 
     def upstream_gitlab_commit(self, revision):
         '''Query the github api for a git commit id and timestamp.'''
-        gitlab_api = 'https://code.videolan.org/api/v4/projects/videolan%2Fdav1d/repository/commits'
+        gitlab_api = 'https://code.videolan.org/api/v4/projects/videolan%2Fdav1d/repository/commits'  # noqa
         url = mozpath.join(gitlab_api, revision)
         self.log(logging.INFO, 'fetch', {'url': url},
                  'Fetching commit id from {url}')

python/mozbuild/mozbuild/vendor_rust.py

@@ -11,7 +11,6 @@ from mozbuild.base import (
     BuildEnvironmentNotFoundException,
     MozbuildObject,
 )
-import mozfile
 import mozpack.path as mozpath
 import os
 import re
@@ -124,8 +123,11 @@ Please commit or stash these changes before vendoring, or re-run with `--ignore-
             self.run_process(args=[cargo, 'install', 'cargo-vendor'],
                              append_env=env)
         elif not self.check_cargo_vendor_version(cargo):
-            self.log(logging.INFO, 'cargo_vendor', {
-                     }, 'cargo-vendor >= 0.1.23 required; force-reinstalling (this may take a few minutes)...')
+            self.log(
+                logging.INFO, 'cargo_vendor', {},
+                ('cargo-vendor >= 0.1.23 required; '
+                 'force-reinstalling (this may take a few minutes)...')
+                )
             env = self.check_openssl()
             self.run_process(args=[cargo, 'install', '--force', 'cargo-vendor'],
                              append_env=env)
@@ -198,8 +200,9 @@ Please commit or stash these changes before vendoring, or re-run with `--ignore-
     RUNTIME_LICENSE_FILE_PACKAGE_WHITELIST = {
         # MIT
         'deque': '6485b8ed310d3f0340bf1ad1f47645069ce4069dcc6bb46c7d5c6faf41de1fdb',
-        # we're whitelisting this fuchsia crate because it doesn't get built in the final product but has a license-file that needs ignoring
-        'fuchsia-cprng' : '03b114f53e6587a398931762ee11e2395bfdba252a329940e2c8c9e81813845b',
+        # we're whitelisting this fuchsia crate because it doesn't get built in the final
+        # product but has a license-file that needs ignoring
+        'fuchsia-cprng': '03b114f53e6587a398931762ee11e2395bfdba252a329940e2c8c9e81813845b',
     }
 
     @staticmethod
@@ -346,15 +349,17 @@ license file's hash.
         vendor_dir = mozpath.join(self.topsrcdir, relative_vendor_dir)
 
         # We use check_call instead of mozprocess to ensure errors are displayed.
-        # We do an |update -p| here to regenerate the Cargo.lock file with minimal changes. See bug 1324462
+        # We do an |update -p| here to regenerate the Cargo.lock file with minimal
+        # changes. See bug 1324462
         subprocess.check_call([cargo, 'update', '-p', 'gkrust'], cwd=self.topsrcdir)
 
         subprocess.check_call([cargo, 'vendor', '--quiet', '--sync',
                                'Cargo.lock'] + [vendor_dir], cwd=self.topsrcdir)
 
         if not self._check_licenses(vendor_dir):
-            self.log(logging.ERROR, 'license_check_failed', {},
-                     '''The changes from `mach vendor rust` will NOT be added to version control.''')
+            self.log(
+                logging.ERROR, 'license_check_failed', {},
+                '''The changes from `mach vendor rust` will NOT be added to version control.''')
             sys.exit(1)
 
         self.repository.add_remove_files(vendor_dir)
@@ -396,4 +401,6 @@ The changes from `mach vendor rust` will NOT be added to version control.
 Please consider finding ways to reduce the size of the vendored packages.
 For instance, check the vendored packages for unusually large test or
 benchmark files that don't need to be published to crates.io and submit
-a pull request upstream to ignore those files when publishing.'''.format(size=cumulative_added_size))
+a pull request upstream to ignore those files when publishing.'''.format(
+                size=cumulative_added_size)
+            )

python/mozbuild/mozbuild/virtualenv.py

@@ -330,7 +330,7 @@ class VirtualenvManager(object):
                 try:
                     handle_package(package[1:])
                     return True
-                except:
+                except Exception:
                     print('Error processing command. Ignoring',
                           'because optional. (%s)' % ':'.join(package),
                           file=self.log_handle)
@@ -659,7 +659,9 @@ def verify_python_version(log_handle):
 
 if __name__ == '__main__':
     if len(sys.argv) < 5:
-        print('Usage: populate_virtualenv.py /path/to/topsrcdir /path/to/topobjdir /path/to/virtualenv /path/to/virtualenv_manifest')
+        print(
+            'Usage: populate_virtualenv.py /path/to/topsrcdir '
+            '/path/to/topobjdir /path/to/virtualenv /path/to/virtualenv_manifest')
         sys.exit(1)
 
     verify_python_version(sys.stdout)