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Check in some documentation tweaks for PEP 3141, add some tests, and implement

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the promotion to complex on pow(negative, fraction).
This commit is contained in:
Jeffrey Yasskin 2007-09-07 15:15:49 +00:00
parent aaaef110dc
commit 3404b3ce2a
5 changed files with 68 additions and 33 deletions
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4
Lib/test/test_builtin.py
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@ -1358,11 +1358,13 @@ class BuiltinTest(unittest.TestCase):
else:
self.assertAlmostEqual(pow(x, y, z), 24.0)
self.assertAlmostEqual(pow(-1, 0.5), 1j)
self.assertAlmostEqual(pow(-1, 1/3), 0.5 + 0.8660254037844386j)
self.assertRaises(TypeError, pow, -1, -2, 3)
self.assertRaises(ValueError, pow, 1, 2, 0)
self.assertRaises(TypeError, pow, -1, -2, 3)
self.assertRaises(ValueError, pow, 1, 2, 0)
self.assertRaises(ValueError, pow, -342.43, 0.234)
self.assertRaises(TypeError, pow)