Welcome to the practical segment of our Python programming journey! Today, we're applying the knowledge from past lessons to solve two practice problems using advanced Python data structures: queues, deques, and sorted maps with custom class keys.

Consider an event-driven system, like a restaurant. Orders arrive, and they must be handled in the order they were received, following the First In, First Out (FIFO) principle. This principle makes it a perfect scenario for a queue or deque implementation in Python.

This code demonstrates the creation and operation of a Queue class, which leverages collections.deque to efficiently implement a queue. The class includes methods to (add) an item, (remove) an item, check if the queue is empty, and return the queue's size. Enqueue operations add an item to the left end of the deque (simulating the arrival of a new order), while dequeue operations remove an item from the right end (simulating the serving of an order), maintaining the First In, First Out (FIFO) principle.