ip address validation in python using regex [duplicate]

Question

In the following ip address validation i want to see if it a valid ip address or not how can i do this using the below re

>>> ip="241.1.1.112343434" 
>>> aa=re.match(r"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}[^0-9]",ip)
>>> aa.group()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'group'

Answer 1

Why not use a library function to validate the ip address?

>>> ip="241.1.1.112343434" 
>>> socket.inet_aton(ip)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
socket.error: illegal IP address string passed to inet_aton