![]() queue appending 2 elements to the empty queue queue.append(1) queue. To add items to the end of the queue we append them to the list. Here is the picture that clearly shows the difference between stack and queue: We can implement a queue using two stacks. Dequeue means to remove an element from the bottom of the list. For enqueue you can use the append method. Where enqueue means to add the elements in the list or container. You can dequeue items from a list using the pop method. I have already discussed about insert() method in my previous tutorial Python Tuple vs List. The simplest way to implement a Python queue is through a list. We will use built-in function insert() for adding the values in queue. Now we will create a queue class and will try to implement the FIFO technique. When you create a queue in python you can think it as of Lists that can grow and Shrink. We can create a queue by importing the Queue class. Implement Enqueue operation in queue in Python When we insert an element into the queue, the operation is called enqueue operation. Python also has the deque library which can efficiently provide stack and queue operations in one object. In Python, we can implement stacks and queues just by using the built-in List data structure. So in this Python Queue Example, we will learn about implementation of FIFO queue in python using lists and also learn about Deque (Double-ended queue) and priority queue. With queues, we add items using the enqueue operation and retrieve items using the dequeue operation. There is no insertion as data elements are always added at the end of the queue. To delete the element in the queue the get () function is used. In python a queue can be implemented using Lists where we can use the insert() and pop() methods to add and remove elements. Answer: In Python, to insert the element in the queue, the put () function is used. Where one end is always used to insert data (this operation is also called as (enqueue) and other end is used for removal of data (i.e. So, the first question arises that what is queue? Queue is an abstract data structure which is opens at both its end. A double-ended queue, or deque, supports adding and removing elements from either end. There are 2 types of queue FIFO (first in first out) and LIFO (last in first out). ![]()
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