How to use the unittest2.TestCase.__init__ function in unittest2

def __init__(self, *args, **kwargs):
        unittest.TestCase.__init__(self, *args, **kwargs)
        if not hasattr(self, 'assertRaisesRegex'):
            self.assertRaisesRegex = self.assertRaisesRegexp

def __init__(self, *args):
    unittest.TestCase.__init__(self, *args)
    self._fail_pat = re.compile('FAIL ([0-9]+)')
    self._warn_pat = re.compile('WARN ([0-9]+)')

def __init__(self, *args, **kwargs):
        unittest.TestCase.__init__(self, *args, **kwargs)
        if not hasattr(self, 'assertRaisesRegex'):
            self.assertRaisesRegex = self.assertRaisesRegexp

def __init__(self, *args, **kwargs):
        TestCase.__init__(self, *args, **kwargs)
        if sys.version_info[0] == 2:
            self.assertRegex = self.assertRegexpMatches
        self._init_env()

def __init__(self, *args, **kwargs):
        TestCase.__init__(self, *args, **kwargs)
        # if sys.version_info[0] == 2:
        #     self.assertRegex = self.assertRegexpMatches
        self._init_env()

def __init__(self, *args, **kwargs):
        TestCase.__init__(self, *args, **kwargs)
        alibabacloud.utils._test_flag = True
        if sys.version_info[0] == 2:
            self.assertRegex = self.assertRegexpMatches

        self._sdk_config = self._init_sdk_config()
        self.access_key_id = self._read_key_from_env_or_config("ACCESS_KEY_ID")
        self.access_key_secret = self._read_key_from_env_or_config("ACCESS_KEY_SECRET")
        self.region_id = self._read_key_from_env_or_config("REGION_ID")
        self.ecs = self._get_ecs_resource()

def __init__(self, *args, **kw):
        unittest.TestCase.__init__(self, *args, **kw)
        self.reference = self._reference().copy()

        # A (key, value) pair not in the mapping
        key, value = self.reference.popitem()
        self.other = {key:value}

        # A (key, value) pair in the mapping
        key, value = self.reference.popitem()
        self.inmapping = {key:value}
        self.reference[key] = value

def __init__(self, *args, **kwargs):
        unittest.TestCase.__init__(self, *args, **kwargs)
        if not hasattr(self, 'assertRaisesRegex'):
            self.assertRaisesRegex = self.assertRaisesRegexp

def __init__(self, *args, **kwargs):
        unittest.TestCase.__init__(self, *args, **kwargs)
        if not hasattr(self, 'assertRaisesRegex'):
            self.assertRaisesRegex = self.assertRaisesRegexp

def __init__(self, *args, **kwargs):
        unittest.TestCase.__init__(self, *args, **kwargs)
        self.currentResult = None  # holds last result object passed to run method