The queue data structure is the one where the data elements are arranged in a queue. The uniqueness of queue lies in the way items are added and removed. The items are allowed at on end but removed from the other end. So it is a First-in-First out method. An queue can be implemented using python list where we can use the insert() and pop() methods to add and remove elements. There is no insertion as data elements are always added at the end of the queue.