如何在大型文本文件中的两个唯一单词之间提取信息 [英] How to extract information between two unique words in a large text file

问题描述

我大约有150个文本文件，其中填充了字符信息.每个文件包含两个唯一词()alpha和bravo，我想提取这些唯一词之间的文本并将其写入不同的文件.

I have about 150 text files filled with character information. Each file contains two unique words ()alpha and bravo and i want to extract the text between these unique words and write it to a different file.

手动地，我可以按住CTRL + F键输入两个单词，然后在两个单词之间复制文本，我只是想知道如何使用程序(最好是Python)处理许多文件.

Manually i can CTRL+F for the two words and copy the text between, i just want to know how to do this using a program (preferably Python) for many files.

推荐答案

您可以为此使用正则表达式

>>> st = "alpha here is my text bravo"
>>> import re
>>> re.findall(r'alpha(.*?)bravo',st)
[' here is my text ']

我的test.txt文件

My test.txt file

alpha here is my line
yipee
bravo

现在使用打开来读取文件，然后应用regular expressions

Now using open to read the file and than applying regular expressions.

>>> f = open('test.txt','r')
>>> data = f.read()
>>> x = re.findall(r'alpha(.*?)bravo',data,re.DOTALL)
>>> x
[' here is my line\nyipee\n']
>>> "".join(x).replace('\n',' ')
' here is my line yipee '
>>>

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