使用分隔符将大文本文件拆分为多个文件

Question

我想使用像 [TEST] 这样的分隔符将一个大文本文件拆分成多个文本文件，如下所示：

texttexttext
texttexttext
texttexttext
[TEST] title1
texttexttext1
texttexttext1
texttexttext1
[TEST] title2
texttexttext2
texttexttext2
texttexttext2
[TEST] title3
texttexttext3
texttexttext3
texttexttext3

应该拆分成多个文本文件：

title1.txt 包含：

texttexttext1
texttexttext1
texttexttext1

title2.txt 包含：

texttexttext2
texttexttext2
texttexttext2

title3.txt 包含：

texttexttext3
texttexttext3
texttexttext3

我该怎么做？

Answer 1

首先你应该阅读更大的 text.txt 文件：

with open('text.txt', 'r+') as text:
    contents: list[str] = text.read().split('\n\n') # There are two newlines between the paragraphs, right?

然后将它们放入编号的文件中：

for index, element in enumerate(contents):
    with open(f'text{index}.txt', 'w') as file:
        file.write(element)

Answer 2

同时读取和写入以避免在内存中保留任何内容的解决方案是：

with open('input.txt') as f:
    f_out = None
    for line in f:
        if line.startswith('[TEST]'):      # we need a new output file
            title = line.split(' ', 1)[1]
            if f_out:
                f_out.close()
            f_out = open(f'{title}.txt', 'w')
        if f_out:
            f_out.write(line)
    if f_out:
        f_out.close()

使用分隔符将大文本文件拆分为多个文件

Split a large text file into multiple files using delimiters

python

text

split

delimiter