如何提取大文本文件中两个唯一词之间的信息 [英] How to extract information between two unique words in a large text file

问题描述

我有大约 150 个填充字符信息的文本文件.每个文件都包含两个唯一的单词 ()alpha 和 bravo，我想提取这些唯一单词之间的文本并将其写入不同的文件.

我可以手动按 CTRL+F 来输入这两个词并复制它们之间的文本，我只想知道如何使用一个程序(最好是 Python)来处理许多文件.

解决方案

你可以使用正则表达式.

<预><代码>>>>st = "alpha 这是我的文本 bravo">>>进口重新>>>re.findall(r'alpha(.*?)bravo',st)['这是我的文字']

我的 test.txt 文件

alpha 这是我的线路伊皮厉害了

现在使用 open 来读取文件而不是应用 正则表达式.

<预><代码>>>>f = open('test.txt','r')>>>数据 = f.read()>>>x = re.findall(r'alpha(.*?)bravo',data,re.DOTALL)>>>X[' 这是我的线路 yipee ']>>>"".join(x).replace(' ',' ')'这是我的线路 yipee '>>>

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.

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.

解决方案

You can use regular expressions for that.

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

My test.txt file

alpha here is my line
yipee
bravo

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
yipee
']
>>> "".join(x).replace('
',' ')
' here is my line yipee '
>>>

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