Welcome to our exploration of queues and deques. These structures frequently surface in everyday programming, managing everything from system processes to printer queues. In this lesson, our goal is to understand and implement queues and deques in Python. Let's dive in!

A queue, similar to waiting in line at a store, operates on the "First In, First Out" or FIFO principle. Python's built-in queue module enables the implementation of queues. This module includes the Queue class, with the put(item) method for adding items and the get() method for removing items.

The dequeued item, "Apple", was the first item we inserted, demonstrating the FIFO principle of queues.

Before trying to remove items from our queue, let's ensure they are not empty. This precaution will prevent runtime errors when attempting to dequeue from an empty queue.