What is Python Class Variable?
A Python class variable is a variable that is shared among all instances of a class. Unlike instance variables, which are unique to each object created from the class, class variables are defined within the class itself and are accessed using the class name or through any instance of the class. They are useful for storing properties or data that should be consistent across all instances, such as a constant value or a counter. Class variables can be modified, but changes will affect all instances of the class, making them a powerful tool for managing shared state.