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Roll back r60248. It's useful to encourage users not to change Rational

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instances.
This commit is contained in:
Jeffrey Yasskin 2008-02-01 07:05:46 +00:00
parent ca2b69f765
commit dc2964b0d8
2 changed files with 22 additions and 3 deletions
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11
Lib/test/test_rational.py
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@ -119,6 +119,17 @@ class RationalTest(unittest.TestCase):
r.__init__(2, 15)
self.assertEquals((7, 3), _components(r))
self.assertRaises(AttributeError, setattr, r, 'numerator', 12)
self.assertRaises(AttributeError, setattr, r, 'denominator', 6)
self.assertEquals((7, 3), _components(r))
# But if you _really_ need to:
r._numerator = 4
r._denominator = 2
self.assertEquals((4, 2), _components(r))
# Which breaks some important operations:
self.assertNotEquals(R(4, 2), r)
def testFromFloat(self):
self.assertRaisesMessage(
TypeError, "Rational.from_float() only takes floats, not 3 (int)",