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[Python-Dev] variable name resolution in exec is incorrect

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Another approach to all this might be to generalise the
mechanism by which a lookup of the globals falls back
to a lookup of __builtins__.

If this were done recursively, then the "stuff" could
be attached to the globals dict, e.g.

   stuff['__builtins__'] = __builtins__
   g = dict(__builtins__ = stuff)
   exec(code, g)
   del g['__builtins__']

-- 
Greg

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