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      1. Python:将列表列表初始化为一定大小,

        Python: Initialize a list of lists to a certain size,(Python:将列表列表初始化为一定大小,)
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                • 本文介绍了Python:将列表列表初始化为一定大小,的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我正在尝试初始化big_list",这是一个包含列表的列表,我们提前知道big_list"中将有 200 个列表,并且每个列表将只包含字符串或不包含任何内容,稍后在程序中将有一个循环,将(一次或多次)附加到这些列表中的特定数量.

                  I'm trying to initialize 'big_list', which is a list containing lists, and we know in advance that there will be 200 lists within 'big_list', and that each list will contain only strings or nothing, and that later in the program there will be a loop that appends(one or more times) to only a certain number of those lists.

                  有没有最简单的方法来解决这个问题?

                  Is there a simplest way to go about this?

                  推荐答案

                  你可以使用列表推导例如:

                  You can use list comprehension for example:

                  big_list = [[] for _ in range(200)]
                  

                  这将创建一个包含 200 个不同列表的列表.

                  That will create a list containing 200 different lists.

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