What is Class Variable Python?
A class variable in Python is a variable that is shared among all instances of a class. Unlike instance variables, which are unique to each object, class variables are defined within the class body and are accessed using the class name or through an instance. They are useful for storing properties that should have the same value across all instances, such as constants or default settings. Changes made to a class variable affect all instances unless overridden by an instance variable. This feature promotes efficient memory usage and consistency across objects created from the same class.