如何在python中简洁地更改特定的子字符串？

original_string = "Hello, world! Welcome to the world of Python."
# 将 "world" 替换为 "universe"
new_string = original_string.replace("world", "universe")

print(new_string)

Hello, universe! Welcome to the universe of Python.

str.replace(old, new[, count])

text = "apple banana apple orange"
new_text = text.replace("apple", "kiwi")
print(new_text)  # 输出: kiwi banana kiwi orange

text = "apple banana apple orange"
new_text = text.replace("apple", "kiwi", 1)  # 只替换第一个 "apple"
print(new_text)  # 输出: kiwi banana apple orange

import re

text = "apple banana apple orange"
# 使用正则表达式替换所有 "apple" 或 "banana"
new_text = re.sub(r'apple|banana', 'kiwi', text)
print(new_text)  # 输出: kiwi kiwi kiwi orange