py-radix is an implementation of a radix tree for Python, which supports storage and lookups of IPv4 and IPv6 networks. This is a Python equivalent to Dave Plonka's Perl Net::Patricia (it even steals the same radix tree code from MRTd).

The radix tree (a.k.a Patricia tree) is the data structure most commonly used for routing table lookups. It efficiently stores network prefixes of varying lengths and allows fast lookups of containing networks. py-radix's implementation is built solely for networks (the data structure itself is more general).

py-radix is licensed under a ISC/BSD licence. The underlying radix tree implementation is taken (and modified) from MRTd and is subject to a 4-term BSD license. See the LICENSE file for details.