Hi Guido,
Thanks for the possible workaround - unfortunately 'stuff' will
contain a whole stack of things that are not in 'context', and were
not defined in 'user_code' - things that python embeds - a (very
small) selection -
{..., 'NameError': <type 'exceptions.NameError'>, 'BytesWarning':
<type 'exceptions.BytesWarning'>, 'dict': <type 'dict'>, 'input':
<function input at 0x10047a9b0>, 'oct': <built-in function oct>,
'bin': <built-in function bin>, ...}
It makes sense why this happens of course, but upon return, the
globals dict is very large, and finding the stuff you defined in your
user_code amongst it is a very difficult task. Avoiding this problem
is the 'locals' use-case for me. Cheers,
Colin
On Thu, May 27, 2010 at 1:38 AM, Guido van Rossum <gu...@python.org> wrote:
> This is not easy to fix. The best short-term work-around is probably a
> hack like this:
>
> def define_stuff(user_code):
> context = {...}
> stuff = {}
> stuff.update(context)
> exec(user_code, stuff)
> for key in context:
> if key in stuff and stuff[key] == context[key]:
> del stuff[key]
> return stuff
>
> --
> --Guido van Rossum (python.org/~guido)
>
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