正则表达式：匹配字符串后跟点/逗号后跟空格

Question

我想转text = "hello this is me, and only me. be carefull from 911. "

进入：text = "hello this is me,<break></break> and only me.<break></break> be carefull from 911. "

仅适用于后跟点或逗号而非数字的字符串。

我尝试过这个表达式：r"\w+([.,])+\s*" 但它也匹配数字。

Answer 1

你可以使用

re.sub(r'([^\W\d_][.,])(\s+)', r'\1<break></break>\2', text)

参见regex demo。

详情：

• ([^\W\d_][.,]) - 第 1 组 (\1)：任何字母，然后是 . 或 ,
• (\s+) - 第 2 组 (\2)：一个或多个空白字符。

见Python demo：

import re
text = "hello this is me,<break></break> and only me.<break></break> be carefull from 911. "
print(re.sub(r'([^\W\d_][.,])(\s+)', r'\1<break></break>\2', text))
# => hello this is me,<break></break> and only me.<break></break> be carefull from 911.