Bug 1559975 - enable py2 and py3 linting in memory r=ahal

Differential Revision: https://phabricator.services.mozilla.com/D35251

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

memory/replace/dmd/block_analyzer.py

@@ -9,6 +9,8 @@
 # contain pointers to it. This can be useful when investigating leaks
 # caused by unknown references to refcounted objects.
 
+from __future__ import absolute_import, print_function
+
 import json
 import gzip
 import sys

memory/replace/dmd/dmd.py

@@ -6,7 +6,7 @@
 
 '''This script analyzes a JSON file emitted by DMD.'''
 
-from __future__ import print_function, division
+from __future__ import absolute_import, print_function, division
 
 import argparse
 import collections
@@ -592,11 +592,8 @@ def printDigest(args, digest):
                        number(record.reqSize),
                        number(record.slopSize)))
 
-            def abscmp((usableSize1, _1), (usableSize2, _2)): return \
-                cmp(abs(usableSize1), abs(usableSize2))
-            usableSizes = sorted(record.usableSizes.items(), cmp=abscmp,
-                                 reverse=True)
-
+            usableSizes = sorted(record.usableSizes.items(),
+                                 key=lambda x: abs(x[0]), reverse=True)
             hasSingleBlock = len(usableSizes) == 1 and usableSizes[0][1] == 1
 
             if not hasSingleBlock:

memory/replace/dmd/test/scan-test.py

@@ -6,7 +6,7 @@
 
 '''Testing for the JSON file emitted by DMD heap scan mode when running SmokeDMD.'''
 
-from __future__ import print_function, division
+from __future__ import absolute_import, print_function, division
 
 import argparse
 import gzip

memory/replace/logalloc/replay/logalloc_munge.py

@@ -18,7 +18,7 @@ The resulting output is:
 See README for more details.
 """
 
-from __future__ import print_function
+from __future__ import absolute_import, print_function
 import sys
 from collections import (
     defaultdict,

tools/lint/py2.yml

@@ -19,7 +19,6 @@ py2:
         - js/xpconnect
         - layout
         - media
-        - memory
         - mobile
         - modules
         - mozglue

tools/lint/py3.yml

@@ -19,7 +19,6 @@ py3:
         - layout/style
         - layout/tools/reftest
         - media
-        - memory/replace
         - modules/freetype2
         - python/safety
         - security/manager/ssl