how to go about making a two player online game using python [on hold]

It will be a two player snake game. The longest snake after 20 apples are eaten wins.

can you give me a rough blueprint for this? Which libraries to use, do I need to use javascript...

How do I send input to the server and how do I send back the game state to the client?

thanks

edit: we are trying to get a group together on reddit to do this. see: http://ift.tt/1HUEa8N to join