# Write a Python program to find the type of IP Address using Regex 
 # Python program to find the type of Ip address


# re module provides support
# for regular expressions
import re


# Make a regular expression
# for validating an Ipv4
ipv4 = '''^(25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
            25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
            25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
            25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)$'''


# Make a regular expression
# for validating an Ipv6
ipv6 = '''(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|
        ([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:)
        {1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1
        ,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}
        :){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{
        1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA
        -F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a
        -fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0
        -9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,
        4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}
        :){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9
        ])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0
        -9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]
        |1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]
        |1{0,1}[0-9]){0,1}[0-9]))'''


# Define a function for finding
# the type of Ip address
def find(Ip): 
   
    # pass the regular expression
    # and the string in search() method
    if re.search(ipv4, Ip):
        print("IPv4")
    elif re.search(ipv6, Ip):
        print("IPv6")
    else:
        print("Neither")


# Driver Code 
if __name__ == '__main__' : 
       
    # Enter the Ip address
    Ip = "192.0.2.126"
       
    # calling run function 
    find(Ip)
   
    Ip = "3001:0da8:75a3:0000:0000:8a2e:0370:7334"
    find(Ip)
   
    Ip = "36.12.08.20.52"
    find(Ip)