Published: 24 December 2020, 18:00
The issue with a beautiful number #12345 proposed to add the following constant into stdlib:
tau = 2*math.pi
It was a controversial proposal since apparently it’s not hard to recreate this constant on your own which will be more explicit, since more people are familiar with π rather than τ. However, the proposal was accepted and tau landed in math
module in Python 3.6 (PEP-628):
import math
math.tau
# 6.283185307179586
There is a long story behind τ which you can read at tauday.com. Especially good this numberphile video.