小编NSD*_*ont的帖子

我知道当我们通过super方法调用parent的方法时,我们可以忽略绑定方法中的"self"参数,如下所示:

class Foo(object):
    def __init__(self):
        super(Foo, self).__init__() # We needn't pass in the "self" argument
        # ...

但__new__方法有所不同:

class Bar(object):
    def __new__(cls, *args, **kwargs):
        return super(Bar, cls).__new__(cls, *args, **kwargs) # Why need a "cls" argument?