def ip2bin(s):
    b = 0
    for x in s.split('.'):
        b |= int(x)
        b <<= 8
    return b >> 8 
    
def bin2ip(b):
    ls = []
    for _ in range(4):        
        ls.append(str(int(b & 0b11111111)))
        b >>= 8        
    return '.'.join(reversed(ls))
    
def iter_net(ip1, ip2):
    x = ip2bin(ip1)
    b2 = ip2bin(ip2)
    while x <= b2:
        yield bin2ip(x)
        x += 1
for x in iter_net('192.168.0.1', '192.168.0.127'):
    print x

def ip_networks():
    ip_netw = open('ip.txt').read().splitlines()
    all_list = []
    for x in ip_netw:
        start, end = x.split('-')
        networks = [ipaddr for ipaddr in ipaddress.summarize_address_range(
            ipaddress.IPv4Address(start), ipaddress.IPv4Address(end)
        )]
        for net in networks:
            for ip in net:
                all_list.append(str(ip))
    return all_list