--- dev_appserver.py.orig       2011-01-10 00:17:28.000000000 +0900
+++ dev_appserver.py    2011-01-10 00:42:43.000000000 +0900
@@ -948,6 +948,11 @@
   return [os.path.join(*p) + s for s, m, t in suffixes]


+def py_file(file):
+  if (file.endswith(".pyc") or file.endswith(".pyo")):
+    file = file[:-1]
+  return file
+
 class FakeFile(file):
   """File sub-class that enforces the security restrictions of the production
   environment.
@@ -960,10 +965,10 @@
                       if os.path.isfile(filename))

   ALLOWED_DIRS = set([
-      os.path.normcase(os.path.realpath(os.path.dirname(os.__file__))),
-      os.path.normcase(os.path.abspath(os.path.dirname(os.__file__))),
-      os.path.normcase(os.path.dirname(os.path.realpath(os.__file__))),
-      os.path.normcase(os.path.dirname(os.path.abspath(os.__file__))),
+      os.path.normcase(os.path.realpath(os.path.dirname(py_file(os.__file__)))),
+      os.path.normcase(os.path.abspath(os.path.dirname(py_file(os.__file__)))),
+      os.path.normcase(os.path.dirname(os.path.realpath(py_file(os.__file__)))),
+      os.path.normcase(os.path.dirname(os.path.abspath(py_file(os.__file__)))),
   ])

   NOT_ALLOWED_DIRS = set([