ASP.net C# VB.Net PHP
Swoole ASP/ADO/VBScript SQL语言 Python Python3 Diango C语言 Lua C++ Go语言 Revel Docker Ruby Perl Erlang R语言 Julia Apex OAuth 2.0 Arduino 编程经验 汇编语言 树莓派 游戏设计 MATLAB Elasticsearch Numpy F# Delphi HTCondor Rust 易语言 NSQ
用户登录
用户注册

分享至

列表列表，将所有字符串转换为 int，Python 3

  • 作者: 丶妖冶叔叔
  • 来源: 51数据库
  • 2022-12-23

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.

推荐阅读
热点文章

Copyright 2018 51数据库(www.51sjk.com)

软件
前端设计
程序设计
Java相关