>> and << in python ?

Question

what are these and how to use them.

Answer 1

They are bitwise operators, this link may help.
https://www.sololearn.com/learn/4070/?ref=app

e. g.
2 << 3 gives 16.
2 = 10 (in binary)
then shift to the left by three digit.
10 turns into 10000
16 = 10000 (in binary)

Answer 2

The idea is that it is a very fast way to multiply or divide by 2^k

Answer 3

>> is moving all the bits one place to the right and << is the same, just to the left