ipUtils.py

def ip2bin(ip):
    num = [int(n) for n in ip.split('.')]
    bits = ['0'*(8-len(bin(n)[2:]))+bin(n)[2:] for n in num]
    return ''.join(bits)

def bin2ip(bin):
    ip = [str(int(bin[i:i+8], 2))+'.' for i in range(0, 32, 8)]
    return ''.join(ip)[0:-1]