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Diffstat (limited to 'Lib/threading.py')
| -rw-r--r-- | Lib/threading.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/threading.py b/Lib/threading.py index 2dcdd0c..94ea2f0 100644 --- a/Lib/threading.py +++ b/Lib/threading.py @@ -689,6 +689,8 @@ class Barrier: 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 |