python - 替换Python中重复的连续字符

Question

我需要制作一个函数，用单个字符替换重复的、连续的字符，例如:

 'hiiii how are you??' -> 'hi how are you?'
 'aahhhhhhhhhh whyyyyyy' -> 'ah why'
 'foo' -> 'fo'
 'oook. thesse aree enoughh examplles.' -> 'ok. these are enough examples'

Answer 1

你可以试试像(.)\1+这样的正则表达式，即“something, then more of the same something”，并将其替换为\1，即“第一件事”。

>>> import re
>>> re.sub(r"(.)\1+", r"\1", 'aahhhhhhhhhh whyyyyyy')
'ah why'
>>> re.sub(r"(.)\1+", r"\1", 'oook. thesse aree enoughh examplles.')
'ok. these are enough examples.'

使用 functools.partial(或您喜欢的任何其他方式)使其成为一个函数

>>> import functools
>>> dedup = functools.partial(re.sub, r"(.)\1+", r"\1")
>>> dedup('oook. thesse aree enoughh examplles.')
'ok. these are enough examples.'