我在Windows上开发Python用的版本是2.7，在Ubuntu上开发的版本是2.6，而在Python的unittest模块中，有几个方法是在2.7才有的，它们是：
| Method | Checks that | New in |
|---|---|---|
| assertEqual(a,b) | a ==b | |
| assertNotEqual(a,b) | a !=b | |
| assertTrue(x) | bool(x) is True | |
| assertFalse(x) | bool(x) is False | |
| assertIs(a,b) | a isb | 2.7 |
| assertIsNot(a,b) | a isnotb | 2.7 |
| assertIsNone(x) | x isNone | 2.7 |
| assertIsNotNone(x) | x isnotNone | 2.7 |
| assertIn(a,b) | a inb | 2.7 |
| assertNotIn(a,b) | a notinb | 2.7 |
| assertIsInstance(a,b) | isinstance(a, b) | 2.7 |
| assertNotIsInstance(a,b) | not isinstance(a,b) | 2.7 |
其他assert
Method Checks that New in
assertAlmostEqual(a, b) round(a-b, 7) == 0
assertNotAlmostEqual(a, b) round(a-b, 7) != 0
assertGreater(a, b) a > b 2.7
assertGreaterEqual(a, b) a >= b 2.7
assertLess(a, b) a < b 2.7
assertLessEqual(a, b) a <= b 2.7
assertRegexpMatches(s, re) regex.search(s) 2.7
assertNotRegexpMatches(s, re) not regex.search(s) 2.7
assertItemsEqual(a, b) sorted(a) == sorted(b) and works with unhashable objs 2.7
assertDictContainsSubset(a, b) all the key/value pairs in a exist in b 2.7
assertMultiLineEqual(a, b) strings 2.7
assertSequenceEqual(a, b) sequences 2.7
assertListEqual(a, b) lists 2.7
assertTupleEqual(a, b) tuples 2.7
assertSetEqual(a, b) sets or frozensets 2.7
assertDictEqual(a, b) dicts 2.7
assertMultiLineEqual(a, b) strings 2.7
assertSequenceEqual(a, b) sequences 2.7
assertListEqual(a, b) lists 2.7
assertTupleEqual(a, b) tuples 2.7
assertSetEqual(a, b) sets or frozensets 2.7
assertDictEqual(a, b) dicts 2.7
