3 Answers
+ 3
You can only build server part with python. If you want capture user action (key pressed, mouse pos..) and display realtime graphisme you need javascript. What kind of game you want ?
+ 8
a simple avoid the flying objects
0
So you only need JavaScript to code your client side game. You can code it with a canvas tag, for example. And if you want Python is to receive client calls to add authentication with user accounts or send client scores to a databases for example.