How to reverse a list of lists in python? [duplicate]

问题

This question already has answers here:

How can I reverse a list in Python? (33 answers)

Closed 5 years ago.

I was wondering how to reverse a list of lists in python. For example,

Original: list = [[1,2,3],[4,5,6],[7,8,9]] Output: new_list = [[7,8,9],[4,5,6],[1,2,3]]

Right now, I am trying this:

new_list = reversed(list)

However, this doesn't seem to work.

回答1:

In [24]: L = [[1,2,3],[4,5,6],[7,8,9]]

In [25]: L[::-1]
Out[25]: [[7, 8, 9], [4, 5, 6], [1, 2, 3]]

来源：https://stackoverflow.com/questions/33578916/how-to-reverse-a-list-of-lists-in-python