def assertEquals(self, test_value, expected_value, prefix=None):
        error_message = prefix % '%s: ' if prefix else ''
        error_message += 'Expected %s, got %s' % (expected_value, test_value)
        assert test_value == expected_value, error_message
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/grizzled/grizzled/test/net/ftp/TestFTPListParse.py/TestFTPListParse.assertEquals/swapped operands of `%`