What are the changes in class attributes in the instance created by python?

Editor to share with you what are the changes in the class attributes in the instance created by python. I hope you will get something after reading this article. Let's discuss it together.

1. When you create an instance, the class property will not become the instance property. When values are assigned to them, they become instance properties.

No value is assigned to the property after instantiation; so it is still a class property. The internal definition list is valid for _ _ init__ because _ _ init__ is called after instantiation. Alternatively, this code will also produce the desired output:

> > class a: list = [] > > y = a () > > x = a () > > x.list = [] > > y.list = [] > > x.list.append (1) > y.list.append (2) > x.list.append (3) > y.list.append (4) > print (x.list) [1,3] > > print (y.list) [2,4]

2. Class properties become instance properties only if and only when values are assigned to them after instantiation, regardless of whether they are in the method or not.

> > class a: string ='> x = a () > y = a () > x.string + ='x' > y.string + ='y' > > x.stringroomx' > > .stringclassy'> after reading this article, I believe you have a certain understanding of "what are the changes in class attributes in python creation examples?" if you want to know more about it, welcome to follow the industry information channel and thank you for your reading!