如何用Python中的空格填充一个固定长度的字符串？ [英] How to pad a string to a fixed length with spaces in Python?

问题描述

我相信这是在很多地方，但我不知道我想要做的行动的确切名称，所以我不能真正查找它。我一直在阅读一本正式的Python书，花了30分钟，试图找出如何做到这一点。

问题：我需要把一个字符串放在一定长度的字段中。例如，如果name字段长度为15个字符，而我的名字是John，那么我会得到John，接着是11个空格来创建15个字符的字段。

我需要这个工作为变量名称的任何字符串。

我知道这可能是某种形式的格式化，但我找不到确切的方法来做到这一点。帮助将不胜感激。

解决方案

$ 格式：

b
$ b

 >>> a =John
>>>格式（a）
'John'
  

I'm sure this is covered in plenty of places, but I don't know the exact name of the action I'm trying to do so I can't really look it up. I've been reading an official Python book for 30 minutes trying to find out how to do this.

Problem: I need to put a string in a certain length "field".

For example, if the name field was 15 characters long, and my name was John, I would get "John" followed by 11 spaces to create the 15 character field.

I need this to work for any string put in for the variable "name".

I know it will likely be some form of formatting, but I can't find the exact way to do this. Help would be appreciated.

解决方案

This is super simple with format:

>>> a = "John"
>>> "{:<15}".format(a)
'John           '

这篇关于如何用Python中的空格填充一个固定长度的字符串？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IT屋！