Python 11.3 : Exercise : First pizza, last pizza

Python is a high-level programming language that is widely used for its simplicity and versatility. It is an interpreted language, which means that it is executed line by line, making it easy to debug and test. Python is also an object-oriented language, which means that it allows for the creation of reusable code through the use of classes and objects.

One example of a Python exercise is the "First pizza, last pizza" problem. This exercise involves creating a program that calculates the total cost of a pizza order based on the number of pizzas ordered and the price per pizza. The program should also keep track of the first and last pizza ordered, as well as the total cost of the order.

To solve this problem, the programmer would start by defining the variables needed to store the number of pizzas ordered, the price per pizza, and the first and last pizza ordered. They would then use basic arithmetic operations to calculate the total cost of the order and store this value in a variable.

The program could also include error handling to ensure that the user enters valid input values and that the program does not crash if an error occurs. Overall, this exercise is a great way to practice basic Python programming skills and gain experience working with variables, arithmetic operations, and error handling.