I am working on a multiplayer game for Flask. Right now I’m using socket programming. Do you know of any websites or libraries or tutorial that can facilitate development of multiplayer games on Flask/Python?
Your post doesn't make a lot of sense to me. First you say you're writing a game for Flask. Flask is a web framework; why would you make games for it? Next you mention socket programming, but if you're using Flask, sockets are (largely, at least) hidden from you. Lastly, you ask about libraries. Libraries help you solve specific problems (e.g. connecting to a database, handling HTTP requests, reading XML, ...), so what specific problems are you encountering?