[issue42133] Update the stdlib to fall back to __spec__.loader if __loader__ isn't defined

[Brett Cannon]

Change by Brett Cannon <brett at python.org>:


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
title: Update the stdlib to fall back to __spec__.parent if __loader__ isn't defined -> Update the stdlib to fall back to __spec__.loader if __loader__ isn't defined

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42133>
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