1 files changed, 26 insertions, 9 deletions
diff --git a/Lib/site.py b/Lib/site.py
index 4d3b869fff..5f1b31e73d 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -105,8 +105,15 @@ def makepath(*paths):
 def abs_paths():
     """Set all module __file__ and __cached__ attributes to an absolute path"""
     for m in set(sys.modules.values()):
-        if (getattr(getattr(m, '__loader__', None), '__module__', None) not in
-                ('_frozen_importlib', '_frozen_importlib_external')):
+        loader_module = None
+        try:
+            loader_module = m.__loader__.__module__
+        except AttributeError:
+            try:
+                loader_module = m.__spec__.loader.__module__
+            except AttributeError:
+                pass
+        if loader_module not in {'_frozen_importlib', '_frozen_importlib_external'}:
             continue   # don't mess with a PEP 302-supplied __file__
         try:
             m.__file__ = os.path.abspath(m.__file__)
@@ -257,6 +264,10 @@ def _getuserbase():
     if env_base:
         return env_base
 
+    # VxWorks has no home directories
+    if sys.platform == "vxworks":
+        return None
+
     def joinuser(*args):
         return os.path.expanduser(os.path.join(*args))
 
@@ -304,11 +315,14 @@ def getusersitepackages():
     If the global variable ``USER_SITE`` is not initialized yet, this
     function will also set it.
     """
-    global USER_SITE
+    global USER_SITE, ENABLE_USER_SITE
     userbase = getuserbase() # this will also set USER_BASE
 
     if USER_SITE is None:
-        USER_SITE = _get_path(userbase)
+        if userbase is None:
+            ENABLE_USER_SITE = False # disable user site and return None
+        else:
+            USER_SITE = _get_path(userbase)
 
     return USER_SITE
 
@@ -623,11 +637,14 @@ def _script():
         for dir in sys.path:
             print("    %r," % (dir,))
         print("]")
-        print("USER_BASE: %r (%s)" % (user_base,
-            "exists" if os.path.isdir(user_base) else "doesn't exist"))
-        print("USER_SITE: %r (%s)" % (user_site,
-            "exists" if os.path.isdir(user_site) else "doesn't exist"))
-        print("ENABLE_USER_SITE: %r" %  ENABLE_USER_SITE)
+        def exists(path):
+            if path is not None and os.path.isdir(path):
+                return "exists"
+            else:
+                return "doesn't exist"
+        print(f"USER_BASE: {user_base!r} ({exists(user_base)})")
+        print(f"USER_SITE: {user_site!r} ({exists(user_site)})")
+        print(f"ENABLE_USER_SITE: {ENABLE_USER_SITE!r}")
         sys.exit(0)
 
     buffer = []