Python: How to use class in Python ? | Python Tutorial | Python for Beginners | Python Full Course

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In Python, a class is a blueprint for creating objects (instances) that have certain attributes and behaviors. It is a fundamental concept in object-oriented programming (OOP). A class defines the characteristics (attributes) and actions (methods) that objects of that class can possess.

Attributes represent the data associated with an object and define its state. They can be variables or properties that store information. Methods, on the other hand, define the behavior of the object and represent the actions it can perform.

Here's a simple example of a class in Python:

class Car:
    def __init__(self, make, model, year):
        self.make = make
        self.model = model
        self.year = year

    def start_engine(self):
        print("The engine is now running.")

    def stop_engine(self):
        print("The engine has been stopped.")

In this example, we define a Car class with attributes make, model, and year. The __init__ method (also known as the constructor) is called when a new object of the class is created and initializes its attributes. The start_engine and stop_engine methods define the behavior of the car object.

To create an instance (object) of the Car class, we can do the following:

my_car = Car("Toyota", "Camry", 2020)

Now, my_car is an object of the Car class with the provided attributes. We can access the attributes and call the methods on this object:

print(my_car.make)  # Output: Toyota
print(my_car.start_engine())  # Output: The engine is now running.

Classes enable code reusability and help organize related data and functionality into a single entity. They allow you to create multiple instances (objects) of the same class, each with its own unique set of attribute values, while sharing the same methods defined in the class.

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