Class and instance attributes:

“Python is an object oriented programming language. Almost everything in Python is an object, with its properties and methods. A Class is like an object constructor, or a “blueprint” for creating objects.”

A class can have attributes (like a characteristics) attached to it, and methods witch represent functions (like actions).

What’s a class attribute:

It’s an attribute witch has been defined outside __init__,

and can be called using the form <class name>.<attribute name>

class Car:
    color = "red"

and to use it:

Car.color = "green"

What’s an instance attribute:

It’s the attribute that are created in the __init_ method

and can be called using the form self.<attribute name> :

class Car:
    def __init__(self, age=0):
        self.age = age

To return age we have to use:

@property
def age(self):
    return self.__age

And to check to value:

@age.setter
def age(self, value):
    self.__age = value

What are the differences between class and instance attributes:

Class attribute are like general characteristic where it will be applied to every object (like the number of wheels in a car or how many engine it use) but instance attributes are for characteristics like the age of a car or the color.

What are the advantages and drawbacks of each of them: