[issue34240] Convert test_mmap to use tempfile

[Eryk Sun]

Eryk Sun <eryksun at gmail.com> added the comment:

> tests are competing with each other to delete and recreate the file

When is this an issue? Each parallel test process should have its own working directory under "{TEMPDIR}/test_python_{pid}".

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nosy: +eryksun

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34240>
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