classes.txt

1. Write a Python program to create a class representing a Circle. Include methods to calculate its area and perimeter. 
2. Write a Python program to create a person class. Include attributes  like name, country and date of birth. Implement a method to  determine the person’s age. 
3. Write a Python program to create a class representing a shopping cart. Include methods for adding and removing items, and calculating the total price. 
4. Write a Python program to create a calculator class. Include methods for basic arithmetic operations.
5. Write a Python program to create a class that represents a shape. Include methods to calculate its area and perimeter. Implement subclasses for different shapes like circle, triangle, and square.