Learn How to Code using Python Day 13. Here in this post, you will learn about Queues. 1. Queue operations are performed FIFO (first in, first out), which means that the first element added will be the first one removed. 2. A queue in Python can be implemented by the following ways: list collections.deque queue.Queue 3. Stacks and queues both have an add operation (push/enqueue) and a remove operation (pop/dequeue). push: (stack) The generic term for adding an object to the "top" of the stack. pop: (stack) The generic term for removing the object from the "top" of the stack. enqueue: (queue) The generic term for adding an object to the "back" of the queue. dequeue: (queue) The generic term for removing an object from the "front" of the queue.