Robustify getfile() against classes that lie about their __module__s

zestyping · zestyping · commit c99e0f18628b · 2001-04-13T12:10:40.000Z
(such as the exceptions in _weakref and _locale!)
diff --git 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'
