pyraknet

pyraknet is a Python extension that has bindings for the reliable UDP network library RakNet.

Gerald Kaszuba
(gak)

pyraknet allows you to concentrate on your game rather then writing a your own networking code. It is straightforward to implement and you only need a small amount of knowledge of TCP/IP networking.

Some features:

Easy to implement
Cross platform
High performance
Low bandwidth overhead
Automatic peer management. Each client is assigned an identifier.
Optionally specify UDP packets to be reliable -- packets will automatically resend themselves if dropped.
Optionally specify UDP packets to arrive in the right order, or to be discarded if it receives a packet out of order.