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gh-109653: Speedup import of threading module (#114509)

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Avoiding an import of functools leads to 50% speedup of import time.

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
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Daniel Hollas 2024-01-31 09:29:44 +00:00 committed by GitHub
parent c8cf5d7d14
commit 5e390a0fc8
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2 changed files with 2 additions and 3 deletions
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4
Lib/threading.py
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@ -3,7 +3,6 @@
import os as _os
import sys as _sys
import _thread
import functools
import warnings
from time import monotonic as _time
@ -1630,8 +1629,7 @@ def _register_atexit(func, *arg, **kwargs):
if _SHUTTING_DOWN:
raise RuntimeError("can't register atexit after shutdown")
call = functools.partial(func, *arg, **kwargs)
_threading_atexits.append(call)
_threading_atexits.append(lambda: func(*arg, **kwargs))
from _thread import stack_size

1
Misc/NEWS.d/next/Library/2024-01-23-23-13-47.gh-issue-109653.KLBHmT.rst Normal file
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@ -0,0 +1 @@
Reduce the import time of :mod:`threading` module by ~50%. Patch by Daniel Hollas.