def failUnlessEqual(self, first, second, msg=None):
        """Fail if the two objects are unequal as determined by the '!='
           operator.
        """
        if first != second:
            raise self.failureException, (msg or (first, second) % '%s != %s')
dataset/ETHPy150Open skyostil/tracy/src/generator/Cheetah/Tests/unittest_local_copy.py/TestCase.failUnlessEqual/swapped operands of `%`