[issue4236] Crash when importing builtin module during interpreter shutdown

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Here is a patch fixing this issue: set builtins._=None at exit.

The new introduced function, PyRun_InteractiveCleanup(), might also be 
called at the end of other functions like PyRun_InteractiveOne() or 
PyRun_InteractiveOneFlags(). If not, PyRun_InteractiveCleanup() should 
be exported.

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keywords: +patch
Added file: http://bugs.python.org/file11914/interactive_cleanup.patch

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