Serhiy Storchaka added the comment: Only one duplicated address is degenerated case. When there is a lot of duplicated addresses in range the patch causes regression.
$ ./python -m timeit -s "import ipaddress; ips = [ipaddress.ip_address('2001:db8::%x' % (i%100)) for i in range(100000)]" -- "ipaddress.collapse_addresses(ips)" Unpatched: 10 loops, best of 3: 369 msec per loop Patched: 10 loops, best of 3: 1.04 sec per loop ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23266> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com