Creating a class with attributes in Python is a fundamental aspect of object-oriented programming (OOP). In python, classes allow you to define a blueprint for creating objects, and attributes are the characteristics or even called as the properties of objects.

I’ll write now a detailed example to show you how to create a class with attributes in Python.

class Car:
    def __init__(self, make, model, year, color):
        self.make = make
        self.model = model
        self.year = year
        self.color = color
        self.mileage = 0  # Default mileage is set to 0

    def drive(self, miles):
        """Simulate driving the car and updating its mileage."""
        self.mileage += miles

    def display_info(self):
        """Display information about the car."""
        print(f"Make: {self.make}")
        print(f"Model: {self.model}")
        print(f"Year: {self.year}")
        print(f"Color: {self.color}")
        print(f"Mileage: {self.mileage} miles")

Let me explain the above code now.

1. The example Car class is defined using the class keyword.
2. The __init__ method is a special method in Python classes that is called when a new instance of the class is created. It initializes the attributes of the class. In this example, it initializes make, model, year, color, and mileage attributes. self is a reference to the instance of the class.
3. Attributes – The make, model, year, color, and mileage are attributes of the Car class. They store information about each car object.
   Instance Methods:
4. drive(self, miles) – This method simulates driving the car and updating its mileage. It takes the argument miles, which represents the distance driven, and updates the mileage attribute accordingly.
5. display_info(self) – This method displays information about the car, including its make, model, year, color, and mileage.

Let’s complete the above code and here is the working example, you can just copy and use it.

class Car:
    def __init__(self, make, model, year, color):
        self.make = make
        self.model = model
        self.year = year
        self.color = color
        self.mileage = 0  # Default mileage is set to 0

    def drive(self, miles):
        """Simulate driving the car and updating its mileage."""
        self.mileage += miles

    def display_info(self):
        """Display information about the car."""
        print(f"Make: {self.make}")
        print(f"Model: {self.model}")
        print(f"Year: {self.year}")
        print(f"Color: {self.color}")
        print(f"Mileage: {self.mileage} miles")

# Creating instances of the Car class
car1 = Car("Toyota", "Camry", 2020, "Red")
car2 = Car("Honda", "Accord", 2018, "Silver")

# Displaying information about the cars
print("Car 1:")
car1.display_info()
print("\nCar 2:")
car2.display_info()

# Driving car 1 for 150 miles and car 2 for 200 miles
car1.drive(150)
car2.drive(200)

# Displaying updated mileage
print("\nAfter driving:")
print("Car 1 Mileage:", car1.mileage, "miles")
print("Car 2 Mileage:", car2.mileage, "miles")

When you run the above code, the following is the expected output:

Car 1:
Make: Toyota
Model: Camry
Year: 2020
Color: Red
Mileage: 0 miles

Car 2:
Make: Honda
Model: Accord
Year: 2018
Color: Silver
Mileage: 0 miles

After driving:
Car 1 Mileage: 150 miles
Car 2 Mileage: 200 miles

Before we conclude, make sure you understand the following key points about Python class attributes:

• Encapsulation – Class attributes encapsulate data within the class, ensuring data integrity and providing a clear interface for interacting with objects.
• Initialization – Class attributes are typically initialized in the constructor (`__init__` method) using the `self` keyword to refer to the instance.
• Access and Modification – Class attributes can be accessed and modified using dot notation (`object.attribute`) both inside and outside the class.
• Shared Attributes – Class attributes can also be shared among all instances of a class, acting as shared data across all objects of that class.

Class attributes in Python are very commonly used, If you follow the above example you must be able to easily understand the concept.