What is the best way to compare floats for almost-equality in Python?

Question

It\'s well known that comparing floats for equality is a little fiddly due to rounding and precision issues.

For example: https://randomascii.wordpress.com/2012/02/2

Answer 1

In terms of absolute error, you can just check

if abs(a - b) <= error:
    print("Almost equal")

Some information of why float act weird in Python https://youtu.be/v4HhvoNLILk?t=1129

You can also use math.isclose for relative errors