python re.sub（）与？P

Question

Can I use a variable from the first argument of re.sub (), to use it in the second argument? Let me explain with an example:

re.sub(r'(?P<id>>>>[0-9]+)', 'sometext(?P=id)sometext', self.text))

Can I use id variable in 'sometext(?P=id)sometext'? Actually, this code dont work, so i came here.

Answer 1

您可以按编号引用捕获组，例如第一个捕获组为\\1 。