Method assertNotIsInstance

Lib/unittest/case.py:1344–1353

Included for symmetry with assertIsInstance.

(self, obj, cls, msg=None)

            self.fail(self._formatMessage(msg, standardMsg))

    def assertNotIsInstance(self, obj, cls, msg=None):
        """Included for symmetry with assertIsInstance."""
        if isinstance(obj, cls):
            if isinstance(cls, tuple):
                for x in cls:
                    if isinstance(obj, x):
                        cls = x
                        break
            standardMsg = f'{safe_repr(obj)} is an instance of {cls!r}'
            self.fail(self._formatMessage(msg, standardMsg))

    def assertIsSubclass(self, cls, superclass, msg=None):
        try: