[Python-Dev] Block module import during Python finalization? (original) (raw)

Victor Stinner victor.stinner at gmail.com
Mon Oct 28 19:45:33 CET 2013


Hi,

While working on a fix, I got an assertion error during Python finalization because Python tried to import the "io" module whereas the module was just unloaded. Python tried to import the io module to display a warning and display the Python line where the warning was emitted. See the following issue for detail: http://bugs.python.org/issue19421

I propose to block importing new modules (or import again unloaded modules) during Python finalization to avoid such tricky bugs.

What do you think?

Does anyone rely on the ability of importing Python modules at exit? :-)

At least, the whole test suite pass with my import_finalization.patch which block import during Python finalization.

Victor



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