How do I create class variables in Python?

How do I create class variables in Python?

In Python, class variables are defined within a class but outside any instance methods. They are shared across all instances.

Can you give me an example of a class variable?

Sure! Here's a simple example:

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

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

my_dog = Dog("Buddy")
print(my_dog.species)  # Outputs: Canis familiaris

What happens if I change the class variable?

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

Can I access class variables from an instance?

Yes, you can access class variables from an instance using self.__class__.variable_name or simply ClassName.variable_name.