Difference between 'cls' and 'self' in Python classes?

Question

Why is cls sometimes used instead of self as an argument in Python classes?

For example:

class Person:
    def __init__(sel         


        

Answer 1

The distinction between "self" and "cls" is defined in PEP 8 . As Adrien said, this is not a mandatory. It's a coding style. PEP 8 says:

Function and method arguments:

Always use self for the first argument to instance methods.

Always use cls for the first argument to class methods.