def assertNotEqual(self, first, second, msg=None):
if not first != second:<EOL><INDENT>msg = self._formatMessage(msg, '<STR_LIT>' % (safe_repr(first),<EOL>safe_repr(second)))<EOL>raise self.failureException(msg)<EOL><DEDENT>
Fail if the two objects are equal as determined by the '!='
           operator.