如何在文件中添加引号

Question

我有下面的文件123,PEN BOOK124,BALL125,BOOK126,PENCIL BOOK我需要添加引号预计出来"123","PEN BOOK""124","BALL""125","BOOK""126","PENCIL BOOK"

Answer 1

假设您有一个test.txt包含以下内容的文件：

123,PEN

124,BALL

125,BOOK

126,PENCIL

您可以使用如下代码，创建一个包含引号内容的临时文件并替换原始文件：

import os 

with open("test.txt") as i: # open file for reading, i = input file 

  with open("temp.txt", "w") as o: # open temp file in write mode, o = output 

     for l in i: # read each line

        o.write('"{}","{}"\n'.format(l.split(',')[0],l.split(',')[1].split('\n')[0]))

os.remove('test.txt')                    # remove the old file

os.rename('temp.txt','test.txt')         # resave the temp file as the new file

输出：

"123","PEN"

"124","BALL"

"125","BOOK"

"126","PENCIL"

Answer 2

我更新了我的答案以涵盖包含空格的文本的其他情况。

看到你regex的问题中有一个标签，你可以使用这样的东西：

import re

text = """123,PEN

124,BALL

125,BOOK

126,PENCIL

123,PEN BOOK"""

new_text = re.sub(r'(\d+),([\w\s]+)$', r'"\1","\2"', text, flags=re.M)