我目前的问题是，我想将一个字符串分成单个单词和标点符号，但不知道如何将它们分开

import re

def split_string(text):
    words = re.findall(r'\w+', text)
    punctuation = re.findall(r'\W+', text)
    return words, punctuation

text = "Hello, world! This is a sentence."
words, punctuation = split_string(text)
print("Words:", words)
print("Punctuation:", punctuation)

Words: ['Hello', 'world', 'This', 'is', 'a', 'sentence']
Punctuation: [', ', '! ', ' ', ' ', ' ', '.']

def split_string(text):
    words = text.split()
    for i in range(len(words)):
        text = text.replace(words[i], '', 1)
    punctuation = text.split()
    return words, punctuation

text = "Hello, world! This is a sentence."
words, punctuation = split_string(text)
print("Words:", words)
print("Punctuation:", punctuation)