Patch #1536071: trace.py should now find the full module name of a

file correctly even on Windows.

Lib/trace.py

@@ -179,9 +179,11 @@ def fullmodname(path):
     # looking in sys.path for the longest matching prefix.  We'll
     # assume that the rest is the package name.
 
+    comparepath = os.path.normcase(path)
     longest = ""
     for dir in sys.path:
-        if path.startswith(dir) and path[len(dir)] == os.path.sep:
+        dir = os.path.normcase(dir)
+        if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
             if len(dir) > len(longest):
                 longest = dir
 

Misc/NEWS

@@ -64,6 +64,9 @@ Core and builtins
 Library
 -------
 
+- Patch #1536071: trace.py should now find the full module name of a
+  file correctly even on Windows.
+
 - logging's atexit hook now runs even if the rest of the module has
   already been cleaned up.