Python Classes and Objects

A class in Python is a blueprint for creating objects. An object is an instance of a class.

1. Defining a Class

To define a class in Python, you use the class keyword followed by the class name.

class MyClass:
    x = 5

2. Creating Objects

To create an object of a class, you simply call the class name followed by parentheses.

class MyClass:
    x = 5

obj = MyClass()

3. Accessing Object Attributes

You can access object attributes using dot notation.

class MyClass:
    x = 5

obj = MyClass()
print(obj.x)  # 5

4. Modifying Object Attributes

You can modify object attributes directly.

class MyClass:
    x = 5

obj = MyClass()
obj.x = 10
print(obj.x)  # 10

5. Constructor Method

A constructor method (__init__()) is a special method that is automatically called when an object is created.

class MyClass:
    def __init__(self, x):
        self.x = x

obj = MyClass(5)
print(obj.x)  # 5

Conclusion

Classes and objects are fundamental concepts in object-oriented programming. They allow you to model real-world entities with attributes and behaviors, making your code more organized and reusable.