我正在尝试编写一个正则表达式来捕获特定的单词replace I

Question

我有以下声明

sentence = " Hi my goal is to achieve highest score in mathematics, but my friend has scored some how more. and now i am myself depressed.

我想用“代词”替换所有的“my”，如下所示。我不想取代我自己，我想保持现状

预期输出为：

Hi PRONOUN goal is to achieve highest score in mathematics, but PRONOUN friend has scored some how more. and now i am myself depressed.

我试过用python跟踪regex

 regex = re.sub(r'\\bmy$')

Answer 1

你很接近。在起点和终点使用边界。你知道吗

例如：

import re

sentence = "Hi my goal is to achieve highest score in mathematics, but my friend has scored some how more. and now i am myself depressed."
print(re.sub(r'\bmy\b', "PRONOUN", sentence))

输出：

Hi PRONOUN goal is to achieve highest score in mathematics, but PRONOUN friend has scored some how more. and now i am myself depressed.