def keys(self):
        if ver == (2, 7):
            return self.viewkeys()
        elif ver == (2, 6):
            return self.iterkeys()
        elif ver >= (3, 0):
            return self.keys()
Test to returns failure.
dataset/ETHPy150Open OpenCobolIDE/OpenCobolIDE/open_cobol_ide/extlibs/future/types/newdict.py/newdict.keys--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/states/test_test.py/TestTestCase.test_fail_without_changes