使用python根据连字符分隔符将长文本文件分成多个文件？

Question

致力于将单个长文本文件分成多个文件。需要放入自己的文件中的每个部分都由连字符线分隔，看起来像这样：

     This is section of some sample text
        that says something.
        
        2---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
        
        This says something else
        
        3---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    
    Maybe this says something eles
    
    4---------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------

我已经开始在 python 中进行尝试，但没有取得太大成功。我考虑过使用 split fnx 但我发现为 split fnx 提供的大多数示例都围绕 len 而不是正则表达式类型字符。这只会生成一个大文件。

with open ('someName.txt','r') as fo:

    start=1
    cntr=0
    for x in fo.read().split("\n"):
        if x=='---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------':
            start = 1
            cntr += 1
            continue
        with open (str(cntr)+'.txt','a+') as opf:
            if not start:
                x = '\n'+x
            opf.write(x)
            start = 0

Answer 1

将条件从 == 切换到 in 可能会获得更好的结果。这样，如果您正在测试的行有任何前导字符，它仍然会通过条件。例如，下面我将 x 中的 x=='-----...' 更改为 '-----'。更改位于长连字符串的最末尾。

with open ('someName.txt','r') as fo:

    start=1
    cntr=0
    for x in fo.read().split("\n"):
        if ('-----------------------------------------------------'
            '-----------------------------------------------------'
            '-----------------------------------------------------'
            '------------------------------------------------') in x:
            start = 1
            cntr += 1
            continue
        with open (str(cntr)+'.txt','a+') as opf:
            if not start:
                x = '\n'+x
            opf.write(x)
            start = 0

另一种解决方案是使用正则表达式。例如...

import re

with open('someName.txt', 'rt') as fo:
    counter = 0
    pattern = re.compile(r'--+')  # this is the regex pattern
    for group in re.split(pattern, fo.read()):
        # the re.split function used in the loop splits text by the pattern
        with open(str(counter)+'.txt','a+') as opf:
            opf.write(group)
        counter += 1