我可以覆盖Python列表显示吗?

我想改变Python列表显示的行为,这样就不用生成 list ,它们产生了 列表

以下是我所做的:

old_list = list

class CallableList(old_list):
    def __init__(self, *args):
        old_list.__init__(self)
        for arg in args:
            self.append(arg)
    def __call__(self, start, end=None):
        if end:
            return self[start:end]
        return self[start]

list = CallableList

完成后,将返回列表的第三个元素:

x = list(1, 2, 3)
print x(2)

x = [1, 2, 3]
print x(2)

错误很简单:

Traceback (most recent call last):
  File "list_test.py", line 23, in <module>
    print x(2)
TypeError: 'list' object is not callable