Banned IPs

banned.py

import sys

from ipaddress import IPv4Network, IPv4Address

def error_banned(ip_addr):
	print "That's a banned IP: {}".format(str(ip_addr))

def error_private(ip_addr):
	print "That IP is in a private range: {}".format(str(ip_addr))

def main():
	banned = ['192.168.0.0/255.255.0.0', '10.0.0.0/255.0.0.0']
	ip = IPv4Address(sys.argv[1].decode())

	if ip.is_private or ip.is_link_local:
		error_banned(ip)

	for network in banned:
		if ip in IPv4Network(network.decode()):
			error_private(ip)

if __name__ == "__main__":
	main()