Reference values for exec
davea at ieee.org
Wed Oct 28 15:25:57 CET 2009
> 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?
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.
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