A class variable is visible to all instances of a class and remains consistent across instances.
A class variable is visible to all instances of a class, and does not vary from instance to instance.
Unlike instance variables that are unique to each object, class variables are shared among all instances of a class.
For example, if a class variable 'count' is incremented in one instance, the updated count will be reflected when accessed from any other instance of the same class.
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