What are class variables in Python?

Can you explain what class variables are in Python?

Sure! Class variables are variables that are shared among all instances of a class. They are defined within the class but outside any instance methods.

How do I define a class variable?

You define a class variable by assigning a value to a variable inside the class definition, like this: class MyClass: followed by my_variable = value.

Can you give me an example?

Of course! Here's a simple example:

class Dog:
    species = "Canis familiaris"  # class variable

    def __init__(self, name):
        self.name = name  # instance variable

In this example, species is a class variable.

What happens if I change the class variable?

If you change the class variable, the change will be reflected in all instances of the class unless an instance variable with the same name is defined.