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| author | Raymond Hettinger <python@rcn.com> | 2007-11-07 02:26:17 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2007-11-07 02:26:17 (GMT) |
| commit | cdcf887999524cb7ff5ba3cab129d04956333e0d (patch) | |
| tree | a97698d11da0e0a5450f5ab4a6647520db0d1a11 /Lib/test/test_dict.py | |
| parent | 12e94200c0b12487e129ce7e325d9315c12ca88a (diff) | |
| download | cpython-cdcf887999524cb7ff5ba3cab129d04956333e0d.zip cpython-cdcf887999524cb7ff5ba3cab129d04956333e0d.tar.gz cpython-cdcf887999524cb7ff5ba3cab129d04956333e0d.tar.bz2 | |
Optimize dict.fromkeys() with dict inputs. Useful for resetting bag/muliset counts for example.
Diffstat (limited to 'Lib/test/test_dict.py')
| -rw-r--r-- | Lib/test/test_dict.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py index 7f0aabb..9f049ad 100644 --- a/Lib/test/test_dict.py +++ b/Lib/test/test_dict.py @@ -243,6 +243,10 @@ class DictTest(unittest.TestCase): self.assertRaises(Exc, baddict2.fromkeys, [1]) + # test fast path for dictionary inputs + d = dict(zip(range(6), range(6))) + self.assertEqual(dict.fromkeys(d, 0), dict(zip(range(6), [0]*6))) + def test_copy(self): d = {1:1, 2:2, 3:3} self.assertEqual(d.copy(), {1:1, 2:2, 3:3}) |