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GH-83658: make multiprocessing.Pool raise an exception if maxtasksperchild is not None or a positive int (GH-93364) (GH-93924)

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Closes GH-83658.
(cherry picked from commit e37a158725)

Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>

Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
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Miss Islington (bot) 2022-06-17 15:32:15 -07:00 • committed by GitHub
parent 5e30ba1577
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Lib/multiprocessing/pool.py
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@ -203,6 +203,9 @@ class Pool(object):
processes = os.cpu_count() or 1
if processes < 1:
raise ValueError("Number of processes must be at least 1")
if maxtasksperchild is not None:
if not isinstance(maxtasksperchild, int) or maxtasksperchild <= 0:
raise ValueError("maxtasksperchild must be a positive int or None")
if initializer is not None and not callable(initializer):
raise TypeError('initializer must be a callable')