列表列表,将所有字符串转换为 int,Python 3

List of list, converting all strings to int, Python 3(列表列表,将所有字符串转换为 int,Python 3)
本文介绍了列表列表,将所有字符串转换为 int,Python 3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

我正在尝试将大列表中小列表的所有元素转换为整数,所以它应该如下所示:

I am trying to convert all elements of the small lists in the big list to integers, so it should look like this:

current list:
list = [['1','2','3'],['8','6','8'],['2','9','3'],['2','5','7'],['5','4','1'],['0','8','7']]


for e in list:
    for i in e:
        i = int(i)

new list:
list = [[1,2,3],[8,6,8],[2,9,3],[2,5,7],[5,4,1],[0,8,7]]

谁能告诉我为什么这不起作用并向我展示一种有效的方法?谢谢!

Could anyone tell me why doesn't this work and show me a method that does work? Thanks!

推荐答案

你可以使用嵌套列表推导:

You can use a nested list comprehension:

converted = [[int(num) for num in sub] for sub in lst]

我也将list重命名为lst,因为list是列表类型的名称,不推荐用于变量名.

I also renamed list to lst, because list is the name of the list type and not recommended to use for variable names.

这篇关于列表列表,将所有字符串转换为 int,Python 3的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

本站部分内容来源互联网,如果有图片或者内容侵犯了您的权益,请联系我们,我们会在确认后第一时间进行删除!

相关文档推荐

Multiprocessing on Windows breaks(Windows 上的多处理中断)
How to use a generator as an iterable with Multiprocessing map function(如何将生成器用作具有多处理映射功能的可迭代对象)
read multiple files using multiprocessing(使用多处理读取多个文件)
Why does importing module in #39;__main__#39; not allow multiprocessig to use module?(为什么在__main__中导入模块不允许multiprocessig使用模块?)
Trouble using a lock with multiprocessing.Pool: pickling error(使用带有 multiprocessing.Pool 的锁时遇到问题:酸洗错误)
Python sharing a dictionary between parallel processes(Python 在并行进程之间共享字典)