gen_ipv4_addresses.py

import itertools
from ipaddress import ip_address

all_ips_tuples = itertools.product(range(256), repeat=4)
# these are generators, meaning they don't store all values in memory
ip_strings = ('.'.join(map(str, ip_tuple))
              for ip_tuple in all_ips_tuples)
ip_objects = (ip_address(ip_string)
              for ip_string in ip_strings)

# get an IP object
next(ip_objects)
# get all IP objects - warning, consumes a lot of memory
all_ip_objects = list(ip_objects)

Examples

next(ip_strings)
Out[136]: '0.0.0.1'

In [137]: next(ip_strings)
Out[137]: '0.0.0.2'

In [138]: next(ip_objects)
Out[140]: IPv4Address('0.0.0.3')

In [141]: next(ip_objects)
Out[141]: IPv4Address('0.0.0.4')