What does self in class in Python mean?

Question

def __init(self)

What does this self mean:?

Answer 1

self represents oneself, self.name='xxx', which means that the name attribute value of this class is 'xxx', def _init_(self):xxxx is a method that will be automatically executed when creating an instance of this class. And def test(self):xxxx means that the methods you can call include self.test(). Do you understand this?

Answer 2

self refers to the object you will reference, which is slightly different during initialization and when calling the method. For example

class A:
    def __init__(self, name):
        self.name = name

    def printname(self):
        print(self.name)

a = A('hello')
a.printname()

When initializing the object,

self refers to this newly created object, so a is assigned to self, then self.name is equivalent to a.name, so the object a is created An attribute name. When calling a method:
self refers to the object you want to reference, which is the object you want to act on, that is, a. So self is assigned the value a. So print(self.name) is equivalent to print(a.name).

Books:

Python Learning Manual has a very detailed explanation.