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[3.14] gh-149221: Add missing test_binomialvariate_log_zero #154879

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Merged
hugovk merged 1 commit into from
Jul 29, 2026
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[3.14] gh-149221: Add missing test_binomialvariate_log_zero #154879

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7 changes: 7 additions & 0 deletions Lib/test/test_random.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1074,6 +1074,13 @@ def test_avg_std(self):
self.assertAlmostEqual(s2/(N-1), sigmasqrd, places=2,
msg='%s%r' % (variate.__name__, args))

def test_binomialvariate_log_zero(self):
# gh-149222: Variety random() return 0.0 no input Error
with unittest.mock.patch.object(random.Random, 'random', side_effect=[0.0] + [0.5] * 20):
result = random.binomialvariate(10, 0.5)
self.assertIsInstance(result, int)
self.assertIn(result, range(11))

def test_binomialvariate_btrs_random_zero(self):
for p, expected in ((0.25, 25), (0.75, 75)):
with self.subTest(p=p):
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