Fix a bug with adding __revision__ info to Exception

src/fix.py

@@ -213,8 +213,11 @@ if not hasattr(Exception, '_original__init__'):
         self._original__init__(*args, **kwargs)
     Exception.__init__ = __init__
 
+import atexit
+def _replace_original__init__():
+    Exception.__init__ = Exception._original__init__
+atexit.register(_replace_original__init__)g = globals()
 
-g = globals()
 for name in exported:
     __builtins__[name] = g[name]