ip_sub.py

ip_sub.py

import socket, struct

def ip_to_decimal(ip):
    return struct.unpack("!L", socket.inet_aton(ip))[0]

def decimal_to_ip(decimal):
    return socket.inet_ntoa(struct.pack("!L", decimal))

cidr = '192.168.0.1/24'
network, netmask = cidr.split('/')
decimal = ip_to_decimal(network)

last_valid = 1 << 32 - int(netmask)

for i in range(last_valid - 1):
    print decimal_to_ip(decimal + i)