test_inspect.py 文件源码

def test_sixteen(self):
        count = len(filter(lambda x:x.startswith('is'), dir(inspect)))
        # This test is here for remember you to update Doc/library/inspect.rst
        # which claims there are 16 such functions
        expected = 16
        err_msg = "There are %d (not %d) is* functions" % (count, expected)
        self.assertEqual(count, expected, err_msg)