def failIfEqual(self, first, second, msg=None):
        """Fail if the two objects are equal as determined by the '=='
           operator.
        """
        if first == second:
            raise self.failureException, \
                  (msg or (first, second) % '%r == %r')
dataset/ETHPy150Open babble/babble/include/jython/Lib/unittest.py/TestCase.failIfEqual/swapped operands of `%`