Why do we use self attribute in defining an instance of class? What is it's specific purpose?

Question

Eg.
class Cat:
def __init__(self, color, legs):
self.color = color
self.legs = legs

Answer 1

Self is an object reference to the object itself. It is similar to this keyword of other programming languages.
Plz refer to this link :
https://stackoverflow.com/questions/2709821/what-is-the-purpose-of-self

Answer 2

You can use any valid variable name, it's just that self is convention. It is an instance of a class i.e object reference to itself.

Answer 3

#Meta

Answer 4

It is the constructor in Python, strongly private with two underscores at the beginning.