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gh-121474: Add threading.Barrier parties arg sanity check. (GH-121480)

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Clinton 2024-07-30 04:53:07 -04:00 • committed by GitHub
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Lib/threading.py
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@ -689,6 +689,8 @@ def __init__(self, parties, action=None, timeout=None):
default for all subsequent 'wait()' calls.
"""
if parties < 1:
raise ValueError("parties must be > 0")
self._cond = Condition(Lock())
self._action = action
self._timeout = timeout