Groups > comp.lang.python > #81911

Re: PyEval_GetLocals and unreferenced variables

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From	Ian Kelly <ian.g.kelly@gmail.com>
Date	Thu, 4 Dec 2014 08:42:09 -0700
Subject	Re: PyEval_GetLocals and unreferenced variables
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On Wed, Dec 3, 2014 at 5:28 AM, Gregory Ewing <greg.ewing@canterbury.ac.nz>
wrote:
>
> Kasper Peeters wrote:
>>
>> That may have been the design plan, but in Python 2.7.6, I definitely
>> am able to inject locals via PyEval_GetLocals() and have them be visible
>> both from the C and Python side;
>
> What seems to be happening is that the dict created by
> PyEval_GetLocals() is kept around, so you can change it
> and have the changes be visible through locals() in
> Python.

That the dict is cached is an implementation detail. It's not advisable to
rely upon this, and as stated in the Python docs, the locals dict should
not be modified.

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Thread

Re: PyEval_GetLocals and unreferenced variables Kasper Peeters <kasper@phi-sci.com> - 2014-12-03 11:18 +0000
  Re: PyEval_GetLocals and unreferenced variables Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-12-04 01:28 +1300
    Re: PyEval_GetLocals and unreferenced variables Ian Kelly <ian.g.kelly@gmail.com> - 2014-12-04 08:42 -0700

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