需要重新格式化文本文件，将演讲者文本向上移动一行到演讲者标签

Question

我有一些 .txt 文件需要重新格式化文本。具体来说，我有 Speaker A 和 Speaker B，正文在下一行。

A:
I can not believe the weather today .
B:
It is beautiful outside .
A:
Really nice .
B:
Okay , how are you doing ?
A:
I am good .
B:
Good to hear .
A:
Thank you .

可以有更多的演讲者，但所有人都会在他们的标签前加上 :。

我希望文件输出为：

A: I can not believe the weather today .
B: It is beautiful outside .
A: Really nice .
B: Okay , how are you doing ?
A: I am good .
B: Good to hear .
A: Thank you .

谢谢。

编辑：

另外，如果speaker labels之间有多行文字，有解决办法吗？例如：

A:
Well hello . 
Long time no see . 
How are you doing ? 
B:
Good . 
How are you ?
A:
Really great .
B:
Good .

有了预期的结果...

A: Well hello . Long time no see . How are you doing ? 
B: Good . How are you ?
A: Really great .
B: Good .

Answer 1

正则表达式替换可以解决这个问题：

import re

text = """A:
I can not believe the weather today .
B:
It is beautiful outside ."""

text = re.sub(r"^(\w+:)\s*", r" ", text, flags=re.MULTILINE)

print(text)

# A: I can not believe the weather today .
# B: It is beautiful outside .

编辑：

基于更新后的问题，多线对话：

import re

text = """A:
Well hello . 
Long time no see . 
How are you doing ? 
B:
Good . 
How are you ?"""

text = re.sub(r"(.*?)\s*\n(?!\w+:)", r" ", text, flags=re.MULTILINE)

print(text)

# A: Well hello . Long time no see . How are you doing ?
# B: Good . How are you ?

Answer 2

如果短语在一行上，这应该有效：

lines = file.readlines()
for ii in range(1,len(lines),2):
    print(lines[ii-1][:-1]+lines[ii])

需要重新格式化文本文件，将演讲者文本向上移动一行到演讲者标签

Need to reformat text file moving speaker text up a line to speaker label

python

python-3.7

编辑：