def assertNotIsInstance(self, obj, cls, msg=None):
        """Included for symmetry with assertIsInstance."""
        if isinstance(obj, cls):
            standardMsg = (safe_repr(obj), cls) % '%s is an instance of %r'
            self.fail(self._formatMessage(msg, standardMsg))
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/unittest/case.py/TestCase.assertNotIsInstance/swapped operands of `%`