Robustify getfile() against classes that lie about their __module__s

    (such as the exceptions in _weakref and _locale!)

diff --git a/Lib/inspect.py b/Lib/inspect.py
index f62167ba2e39e2a5b6b056b269c34a22f5ecb574..c358a5c57e77b315740e600f2f6312ec7f4d275c 100644 (file)
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -173,7 +173,7 @@ def getfile(object):
             return object.__file__
         raise TypeError, 'arg is a built-in module'
     if isclass(object):
-        object = sys.modules[object.__module__]
+        object = sys.modules.get(object.__module__)
         if hasattr(object, '__file__'):
             return object.__file__
         raise TypeError, 'arg is a built-in class'