When should I use class variables in programming?

When should I use class variables in programming?

Class variables are shared across all instances of a class. Use them when you need to maintain a state that is common to all instances.

Can you give me an example of a class variable?

Sure! For instance, if you have a class Car, a class variable could be number_of_wheels, which is the same for all cars.

What are the advantages of using class variables?

Class variables save memory since they are shared among all instances, and they can be useful for keeping track of data that applies to the entire class.

Are there any downsides to using class variables?

Yes, class variables can lead to unexpected behavior if not managed properly, especially in multi-threaded environments.

How do class variables differ from instance variables?

Instance variables are unique to each object, while class variables are shared across all instances of the class.