在Python中，如何拆分字符串并保留分隔符？

import re

def split_and_keep_delimiters(s, delimiters):
    pattern = '|'.join(map(re.escape, delimiters))
    return re.split(f'({pattern})', s)

# 示例
s = "Hello, world! How are you?"
delimiters = [',', '!', '?']
result = split_and_keep_delimiters(s, delimiters)
print(result)

['Hello', ',', ' world', '!', ' How are you', '?']

pip install regex

import regex as re

def split_and_keep_delimiters(s, delimiters):
    pattern = '|'.join(map(re.escape, delimiters))
    return re.split(f'({pattern})', s)

# 示例
s = "Hello, world! How are you?"
delimiters = [',', '!', '?']
result = split_and_keep_delimiters(s, delimiters)
print(result)

['Hello', ',', ' world', '!', ' How are you', '?']

def split_and_keep_delimiters(s, delimiters):
    result = []
    current_token = ""
    for char in s:
        if char in delimiters:
            if current_token:
                result.append(current_token)
                current_token = ""
            result.append(char)
        else:
            current_token += char
    if current_token:
        result.append(current_token)
    return result

# 示例
s = "Hello, world! How are you?"
delimiters = [',', '!', '?']
result = split_and_keep_delimiters(s, delimiters)
print(result)

['Hello', ',', ' world', '!', ' How are you', '?']