小编Sai*_*idu的帖子

嗨伙计们,我对比较两套有疑问

    >>> x = {"a","b","1","2","3"}  
    >>> y = {"c","d","f","2","3","4"}  
    >>> z=x<y        
    >>> print(z)
    False
    >>> z=x>y
    >>> print(z)
    False

在上面的逻辑中,对于两者z=x<y and z=x>y.我输出为False,而其中一个表达式应该返回True.谁能解释我为什么？