Checking for IP addresses

Question

Are there any existing libraries to parse a string as an ipv4 or ipv6 address, or at least identify whether a string is an IP address (of either sort)?

Answer 1

You can use the netaddr library. It has valid_ipv4/valid_ipv6 methods:

import netaddr
if netaddr.valid_ipv4(str_ip) is True:
    print("IP is IPv4")
else:
    if netaddr.valid_ipv6(str_ip) is True:
        print("IP is IPv6")

Answer 2

If you know for sure that the address is valid and only trying to decide whether it is ipv4 or ipv6, wouldn't it be sufficient to do just:

if ":" in address:
    print("Ipv6")
else:
    print("Ipv4")