What are some queue implementations in Python?

What are some queue implementations in Python?

In Python, you can use the built-in queue module, which provides several types of queues like FIFO, LIFO, and priority queues.

Can you explain how to use the FIFO queue?

Sure! You can use queue.Queue() for a FIFO queue. Here's a simple example:

import queue

q = queue.Queue()
q.put(1)  # Add an item
q.put(2)
print(q.get())  # Removes and returns the first item (1)

What about a priority queue?

For a priority queue, you can use queue.PriorityQueue(). Items are retrieved based on their priority:

import queue

pq = queue.PriorityQueue()
pq.put((1, 'task1'))  # Lower number means higher priority
pq.put((3, 'task3'))
pq.put((2, 'task2'))
while not pq.empty():
    print(pq.get())  # Returns items in order of priority