Currently, ipaddress._BaseNetwork (and by extension, ipaddress.IPv4Network and ipaddress.IPv6Network) does not have a __len__ method, it only has num_addresses.
This makes the following code not work: >>> random.choice(ipaddress.ip_network('6.0.0.0/8')) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/nyuszika7h/.pyenv/versions/3.10.0/lib/python3.10/random.py", line 378, in choice return seq[self._randbelow(len(seq))] TypeError: object of type 'IPv4Network' has no len() The workaround is a bit ugly: >>> (network := >>> ipaddress.ip_network('6.0.0.0/8'))[random.randrange(network.num_addresses)] IPv4Address('6.60.184.142') With a custom subclass, all works well: >>> class MyIPv4Network(ipaddress.IPv4Network): ... def __len__(self): ... return self.num_addresses ... >>> random.choice(MyIPv4Network('6.0.0.0/8')) IPv4Address('6.40.110.63') _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/4OHZ6QZWDI3U2ADI5A36UU73OOXFOGJE/ Code of Conduct: http://python.org/psf/codeofconduct/