gh-74585: Fix race condition in shutil.copyfile#136836

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abadger wants to merge 3 commits intopython:mainfrom

abadger:fix-race-in-shutil-74585

Commits on Sep 22, 2025

bpo-30400: Fix race condtion in shutil.copyfile

Preston Moore
authored and
abadger
committed
Fix code for missing fcntl on non-POSIX systems.
abadger
committed
Get more output about how the windows test is failing.
abadger
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