python class methods and attributes
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In Python, classes are a fundamental concept of object-oriented programming (OOP). Classes provide a way to structure and organize code in a more modular and reusable manner. In this tutorial, we will explore class methods and attributes in Python.
Class attributes are variables that are shared by all instances of a class. They are defined outside of any method in the class and are the same for all instances of that class.
In the above example, wheels is a class attribute shared by all instances of the Car class, while make and model are instance attributes unique to each instance.
Class methods are methods that are bound to the class and not the instance of the class. They are defined using the @classmethod decorator.
In the above example, add and multiply are class methods that can be called on the class itself rather than an instance of the class.
Let's combine class attributes and methods in a more practical example:
In this example, total_students is a class attribute that keeps track of the total number of Student instances created. The get_total_students class method allows us to access this class attribute.
Understanding class methods and attributes is crucial for effective object-oriented programming in Python. Class attributes provide shared data across instances, while class methods offer functionality that is not tied to a specific instance but to the class itself. This allows for cleaner code organization and more modular design.
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