simple_ipcalc.py

# -*- coding: utf-8 -*-

try:
    input = raw_input
except NameError:
    pass

def ip2list(ip):
    ip = [int(i) for i in ip.split('.')]
    if len(ip) == 4:
        return ip
    else:
        raise TypeError('Invalid conversion of ip to list')

def list2ip(array):
    return '.'.join([str(a) for a in array])

ip = ip2list(input('IP (0.0.0.0): '))
mask = ip2list(input('Mask (0.0.0.0): '))

network = [i & m for i, m in zip(ip, mask)] # ip and mask
imask = [~m & 0xff for m in mask] # invert mask
broadcast = [i | n for i, n in zip(imask, network)] # inverted mask or network

show = '''
ip: {0}
mask: {1}
network: {2}
broadcast: {3}
'''
print(show.format(list2ip(ip), list2ip(mask), list2ip(network),
                  list2ip(broadcast)))