PI, the most ineffecient and beautiful pi calculator

Usage:

running:

python3 PI.py

controlling

Press s to save all calculated digits in "pi.txt".
Press p to pause calculation.
Press c to toggle between avg d/s, current d/s, avg s/d and current s/d.
Press q to go to the quit screen, where you can press y/n to save/not save and press c to cancel.

Screenshots:

^{In case you were wondering why there are 4 threads: Thread 1 is used for calculating pi, thread 2 is used for rendering pi, thread 3 is used to handle keys, main thread is left unused}