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GH-99155: Fix NormalDist pickle with 0 and 1 protocols (GH99156)

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Nikita Sobolev 2022-11-07 05:56:41 +03:00 • committed by GitHub
parent f626b7b504
commit bef9efabc3
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3 changed files with 15 additions and 3 deletions
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6
Lib/statistics.py
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@ -1446,3 +1446,9 @@ class NormalDist:
def __repr__(self): def __repr__(self):
return f'{type(self).__name__}(mu={self._mu!r}, sigma={self._sigma!r})' return f'{type(self).__name__}(mu={self._mu!r}, sigma={self._sigma!r})'
def __getstate__(self):
return self._mu, self._sigma
def __setstate__(self, state):
self._mu, self._sigma = state

11
Lib/test/test_statistics.py
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@ -3003,14 +3003,19 @@ class TestNormalDist:
nd = NormalDist(100, 15) nd = NormalDist(100, 15)
self.assertNotEqual(nd, lnd) self.assertNotEqual(nd, lnd)
def test_pickle_and_copy(self): def test_copy(self):
nd = self.module.NormalDist(37.5, 5.625) nd = self.module.NormalDist(37.5, 5.625)
nd1 = copy.copy(nd) nd1 = copy.copy(nd)
self.assertEqual(nd, nd1) self.assertEqual(nd, nd1)
nd2 = copy.deepcopy(nd) nd2 = copy.deepcopy(nd)
self.assertEqual(nd, nd2) self.assertEqual(nd, nd2)
nd3 = pickle.loads(pickle.dumps(nd))
self.assertEqual(nd, nd3) def test_pickle(self):
nd = self.module.NormalDist(37.5, 5.625)
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
with self.subTest(proto=proto):
pickled = pickle.loads(pickle.dumps(nd, protocol=proto))
self.assertEqual(nd, pickled)
def test_hashability(self): def test_hashability(self):
ND = self.module.NormalDist ND = self.module.NormalDist

1
Misc/NEWS.d/next/Library/2022-11-06-12-44-51.gh-issue-99155.vLZOzi.rst Normal file
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@ -0,0 +1 @@
Fix :class:`statistics.NormalDist` pickle with ``0`` and ``1`` protocols.