How do you define an object in class?

an object is an element (or instance) of a class ; objects have the behaviors of their class. The object is the actual component of programs, while the class specifies how instances are created and how they behave.

A class is a user-defined blueprint or prototype from which objects are created . Classes provide a means of bundling data and functionality together. Creating a new class creates a new type of object, allowing new instances of that type to be made.10 Haz 2021

Everything is an object in Python. Passing an object to a class is no different from passing an integer (as in that example), a string, or anything else. Then b is an object of class Bar whose constructor will be called to initialize b, a`s(Foo()) or Bar()? and what is b.