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GH-83658: make multiprocessing.Pool raise an exception if maxtasksperchild is not None or a positive int (GH-93364) (GH-93923)

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Miss Islington (bot) 2022-06-17 15:31:42 -07:00 • committed by GitHub
parent 05d83a706c
commit 2b7fc1bfe6
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3 changed files with 9 additions and 0 deletions
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Lib/multiprocessing/pool.py
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@ -203,6 +203,9 @@ def __init__(self, processes=None, initializer=None, initargs=(),
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')