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Check for a common user error with defaultdict().

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This commit is contained in:
Raymond Hettinger 2007-02-07 21:42:17 +00:00
parent 3156316823
commit 5a0217efea
2 changed files with 11 additions and 4 deletions
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7
Lib/test/test_defaultdict.py
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@ -47,6 +47,7 @@ class TestDefaultDict(unittest.TestCase):
self.assertEqual(err.args, (15,))
else:
self.fail("d2[15] didn't raise KeyError")
self.assertRaises(TypeError, defaultdict, 1)
def test_missing(self):
d1 = defaultdict()
@ -60,10 +61,10 @@ class TestDefaultDict(unittest.TestCase):
self.assertEqual(repr(d1), "defaultdict(None, {})")
d1[11] = 41
self.assertEqual(repr(d1), "defaultdict(None, {11: 41})")
d2 = defaultdict(0)
self.assertEqual(d2.default_factory, 0)
d2 = defaultdict(int)
self.assertEqual(d2.default_factory, int)
d2[12] = 42
self.assertEqual(repr(d2), "defaultdict(0, {12: 42})")
self.assertEqual(repr(d2), "defaultdict(<type 'int'>, {12: 42})")
def foo(): return 43
d3 = defaultdict(foo)
self.assert_(d3.default_factory is foo)