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Add extra tests for `random.binomialvariate` by gaogaotiantian · Pull Request #112325 · python/cpython · GitHub

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Add extra tests for random.binomialvariate #112325

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Merged
rhettinger merged 6 commits into from
Nov 23, 2023
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Add extra tests for random.binomialvariate #112325

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c29a796
Add extra checks in random.binomialvariate
gaogaotiantian Nov 22, 2023
be41745
📜🤖 Added by blurb_it.
blurb-it[bot] Nov 22, 2023
00cb3ea
revert changes to binomial variate
gaogaotiantian Nov 23, 2023
f091c7a
Remove test for float n
gaogaotiantian Nov 23, 2023
b903b89
Update 2023-11-22-23-08-47.gh-issue-81620.mfZ2Wf.rst
gaogaotiantian Nov 23, 2023
ce62406
Update the test
gaogaotiantian Nov 23, 2023
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4 changes: 4 additions & 0 deletions Lib/test/test_random.py
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Expand Up @@ -1081,13 +1081,17 @@ def test_binomialvariate(self):
B(n=1, p=-0.5) # Negative p
with self.assertRaises(ValueError):
B(n=1, p=1.5) # p > 1.0
self.assertEqual(B(0, 0.5), 0) # n == 0
self.assertEqual(B(10, 0.0), 0) # p == 0.0
self.assertEqual(B(10, 1.0), 10) # p == 1.0
self.assertTrue(B(1, 0.3) in {0, 1}) # n == 1 fast path
self.assertTrue(B(1, 0.9) in {0, 1}) # n == 1 fast path
self.assertTrue(B(1, 0.0) in {0}) # n == 1 fast path
self.assertTrue(B(1, 1.0) in {1}) # n == 1 fast path

# BG method very small p
self.assertEqual(B(5, 1e-18), 0)

# BG method p <= 0.5 and n*p=1.25
self.assertTrue(B(5, 0.25) in set(range(6)))

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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2023-11-22-23-08-47.gh-issue-81620.mfZ2Wf.rst
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@@ -0,0 +1 @@
Add extra tests for :func:`random.binomialvariate`
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