替换位于之间的字符串 [英] Replace a string located between

问题描述

这是我的问题:在一个包含逗号的文本变量中，我尝试仅删除位于两个字符串之间的逗号(实际上是 [ 和 ]).例如使用以下字符串:

Here is my problem: in a variable that is text and contains commas, I try to delete only the commas located between two strings (in fact [ and ]). For example using the following string:

input =  "The sun shines, that's fine [not, for, everyone] and if it rains, it Will Be better."
output = "The sun shines, that's fine [not for everyone] and if it rains, it Will Be better."

我知道如何将 .replace 用于整个变量，但我不能为它的一部分使用它.这个网站上有一些主题接近，但我没有设法利用它们来解决我自己的问题，例如:

I know how to use .replace for the whole variable, but I can not do it for a part of it. There are some topics approaching on this site, but I did not manage to exploit them for my own question, e.g.:

• 反复提取文本文件中的两个分隔符，Python
• Python 使用正则表达式和替换()
• 替换两个引号之间的字符串

推荐答案

import re
Variable = "The sun shines, that's fine [not, for, everyone] and if it rains, it Will Be better."
Variable1 = re.sub("\[[^]]*\]", lambda x:x.group(0).replace(',',''), Variable)

首先，您需要找到需要重写的字符串部分(您可以使用 re.sub 完成此操作).然后你重写那些部分.

First you need to find the parts of the string that need to be rewritten (you do this with re.sub). Then you rewrite that parts.

函数var1 = re.sub("re", fun, var)的意思是:找出te变量var中符合"re的所有子串";使用函数 fun 处理它们；返回结果；结果将保存到 var1 变量中.

The function var1 = re.sub("re", fun, var) means: find all substrings in te variable var that conform to "re"; process them with the function fun; return the result; the result will be saved to the var1 variable.

正则表达式[[^]]*]"的意思是:找到以[开头的子串(\[ in re)，包含除之外的所有内容] ([^]]* in re) 并以 ] 结尾 (\] in re).

The regular expression "[[^]]*]" means: find substrings that start with [ (\[ in re), contain everything except ] ([^]]* in re) and end with ] (\] in re).

对于每个发现的事件，运行一个函数，将这个事件转换为新的事件.功能是:

For every found occurrence run a function that convert this occurrence to something new. The function is:

lambda x: group(0).replace(',', '')

这意味着:取找到 (group(0)) 的字符串，将 ',' 替换为 ''(删除 ','>, 换句话说)并返回结果.

That means: take the string that found (group(0)), replace ',' with '' (remove , in other words) and return the result.

这篇关于替换位于之间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！