Description: A class variable is a type of variable that is shared among all instances of a class in object-oriented programming. Unlike instance variables, which are unique to each object created from the class, class variables are common and accessed through the class itself, not through instances. This means that any change made to a class variable will be reflected in all instances of that class. Class variables are useful for storing information that should be shared among all instances, such as counters, global configurations, or constants. They are typically defined within the body of the class but outside of any method. In many programming languages, such as Python, Java, and C++, class variables are used to implement design patterns and to facilitate the management of data that is relevant to the class as a whole. Proper use of class variables can enhance code efficiency and organization, allowing developers to maintain clearer control over the shared state of class instances.
