IP address regex python

Question

I am having an issue with Regular expression, I need the most efficient regex that match IP address and in range of 255 only.

I tried this one \"ip_pattern = \'\

Answer 1

This should do it:

^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$