fix for cust sys packages path (#1335)

* fix for cust sys packages path

* simplifying cust pkg path

azure_functions_worker/constants.py

@@ -1,7 +1,5 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
-import os
-import pathlib
 import sys
 
 # Capabilities
@@ -54,6 +52,4 @@ PYTHON_LANGUAGE_RUNTIME = "python"
 RETRY_POLICY = "retry_policy"
 
 # Paths
-CUSTOMER_PACKAGES_PATH = os.path.join(pathlib.Path.home(),
-                                      pathlib.Path(
-                                          "site/wwwroot/.python_packages"))
+CUSTOMER_PACKAGES_PATH = "/home/site/wwwroot/.python_packages/lib/site-packages"

azure_functions_worker/dispatcher.py

@@ -295,8 +295,7 @@ class Dispatcher(metaclass=DispatcherMeta):
             import azure.functions  # NoQA
 
         if CUSTOMER_PACKAGES_PATH not in sys.path:
-            logger.warning("Customer packages not in sys path. "
-                           "This should never happen! ")
+            logger.warning("Customer packages not in sys path.")
 
         # loading bindings registry and saving results to a static
         # dictionary which will be later used in the invocation request

python/prodV4/worker.py

@@ -1,10 +1,9 @@
 import os
+import pathlib
 import sys
 
-from pathlib import Path
-
 # User packages
-PKGS_PATH = "site/wwwroot/.python_packages"
+PKGS_PATH = "/home/site/wwwroot/.python_packages"
 VENV_PKGS_PATH = "site/wwwroot/worker_venv"
 
 PKGS = "lib/site-packages"
@@ -36,12 +35,10 @@ def determine_user_pkg_paths():
     """
     minor_version = sys.version_info[1]
 
-    home = Path.home()
-    pkgs_path = os.path.join(home, PKGS_PATH)
     usr_packages_path = []
 
     if minor_version in (7, 8, 9, 10, 11):
-        usr_packages_path.append(os.path.join(pkgs_path, PKGS))
+        usr_packages_path.append(os.path.join(PKGS_PATH, PKGS))
     else:
         raise RuntimeError(f'Unsupported Python version: 3.{minor_version}')
 
@@ -50,7 +47,7 @@ def determine_user_pkg_paths():
 
 if __name__ == '__main__':
     # worker.py lives in the same directory as azure_functions_worker
-    func_worker_dir = str(Path(__file__).absolute().parent)
+    func_worker_dir = str(pathlib.Path(__file__).absolute().parent)
     env = os.environ
 
     # Setting up python path for all environments to prioritize