This program uses pygame to stimulate two masses colliding in a frictionless enclosed environment. Due to some PHYSICS stuff, the number of collisions turns out to be pi!
This program was inspired by 3Blue1Brown's video
Here is another video by 3BlueBrown explaining why this phenomenon takes place.
Helpful Wikipedia pages:
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.