Python 中文本文件的条件分块

Question

希望这是一个非常直截了当的问题。我有一份成绩单，我正试图将其分成每个演讲者的部分。我目前拥有的代码是；

text = '''
Speaker 1: hello there

this is some text. 

Speaker 2: hello there, 

this is also some text.
'''

a = text.split('\nSpeaker')

这会按照我的意愿拆分文本，但是我错过了第二个话语中的 'Speaker' 标识符。为了识别目的，我需要保留它。具体来说，我想要获得的结果类似于以下内容；

['Speaker 1: hello there\n\nI am checking to see if this works. \n', ' Speaker2: 
Hopefully it will, \n\nit seems pretty straightforward.\n']

欢迎提出任何建议

谢谢

Answer 1

re.split 在多行模式下，匹配 \n（换行），用零宽度正前瞻匹配 Speaker（(?=Speaker)）：

re.split(r'\n(?=Speaker)', text, flags=re.MULTILINE)

示例：

In [228]: text = '''Speaker 1: hello there
     ...: 
     ...: this is some text. 
     ...: 
     ...: Speaker 2: hello there, 
     ...: 
     ...: this is also some text.
     ...: '''

In [229]: re.split(r'\n(?=Speaker)', text, flags=re.MULTILINE)
Out[229]: 
['Speaker 1: hello there\n\nthis is some text. \n',
 'Speaker 2: hello there, \n\nthis is also some text.\n']

Answer 2

非正则表达式解决方案：

['Speaker' + substr for substr in text.split('Speaker')[1:]]

输出

['Speaker 1: hello there\n\nthis is some text. \n\n',
 'Speaker 2: hello there, \n\nthis is also some text.\n']

Python 中文本文件的条件分块

Conditional chunking of text file in Python

python

text-processing

transcription

text-chunking