Reference values for exec
Dave Angel
davea at ieee.org
Wed Oct 28 10:25:57 EDT 2009
Garito wrote:
> Hi!
> I'm trying to use exec in a recursive way but I have a problem
>
> When I read the manual I understand that the globals and the locals are
> passed by reference but if I try to use it in a recursive way the new values
> added in a step are not passed to the next one
>
> Could someone point me how to do that?
>
> Thanks
>
>
see
http://www.catb.org/~esr/faqs/smart-questions.html
Post some sample code, and show what doesn't work; maybe you'll get some help that way.
I'll point out just one thing: you cannot add new local variables at runtime. locals() should be used to inspect, not to modify.
See the help text:
"The contents of this dictionary should not be modified; changes may not affect
the values of local variables used by the interpreter"
I have no idea if exec() can be safely called recursively. Most people successfully avoid calling it at all.
DaveA
More information about the Python-list
mailing list