[issue4792] PythonCmd in Modules/_tkinter.c should use the given "interp" parameter

[Guilherme Polo]

Guilherme Polo <ggpolo at gmail.com> added the comment:

I will be committing this but I'm afraid a test won't be added for it.
Several people told me that creating multiple tcl interpreters (even if
only one is active at some point) is problematic, specially in older tcl
versions.

So if someone can find another way to reproduce the problem you are
welcome to add a test. Ideally it would let the only tcl interpreter
created still alive (although as I see this bug you will only hit it if
a Tkapp is dealloced and then a callback created through Python is
invoked), otherwise the other existing tests will suffer.

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<http://bugs.python.org/issue4792>
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