Python Thread Queue LifoQueue – Libo-Python Zero-basics Tutorial

directory

• Python thread Queue classification
• LifoQueue is a Python thread queue
• The LifoQueue function is introduced in Python
• LifoQueue is used by Python threads
• Five. Guess you like it

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In Python thread FIFO Queue Queue – article has introduced the FIFO Queue Queue, and today is the second to introduce: thread Queue LifoQueue – LIFO, data after the advanced type, what is the difference between the two?

Python thread Queue classification

• 1. Thread Queue – FIFO(first-in, first-out Queue)****, namely which data is stored first, which data is taken first when fetching data, the same as in life Queue to buy things;
• 2. Thread queue LifoQueue – LIFO(first in, last out queue)****, that is, which data is stored last, when the data is taken first, the same as the pistol magazine in life, the last bullet into the first shot;
• 3. PriorityQueue – PriorityQueue(PriorityQueue)****, that is, when data is stored, a priority is added to the queue, and when data is fetched, the queue with the highest priority is taken out;

Only the second thread Queue(LIFO) will be covered today, and the last will be covered in more detail in the next article!

LifoQueue is a Python thread queue

As mentioned above, in contrast to the Queue in the previous article, the data stored last is retrieved first, and the data stored first is retrieved last, as shown in the figure below:

If FIFO is to eat what pull what, then LIFO is to eat what vomit what, eat after vomit, eat after vomit ~ ~ is really heavy taste!

The LifoQueue function is introduced in Python

The Python thread Queue — FIFO is covered in detail. Both belong to queues and have the same function!

LifoQueue is used by Python threads

#! Usr /bin/env python # -* -coding :utf-8 _*- "" www.codersrc.com @file :Python thread advance after queue lifoqueue. py @time :2021/05/05 07:37 @motto: A thousand miles without a step, a river without a small stream, the wonderful life of the program needs to be accumulated with perseverance! Import queue import threading import time q= queue.lifoqueue (5) Q =queue.LifoQueue() def put(): for I in range(10): Q.print () print('ok') def get(): for I in range(10): Value = q.g et () print (" data removed from the queue "% d % value) q.t ask_done () t1 = threading. Thread (target = put, args = ()) t1. The start () Threading.thread (target=get,args=()) t2.start() 1 0 is placed into the queue data is placed into the data to the queue is placed into 2 to 3 is placed into the queue data to the queue data is placed into 4 to 5 is placed into the queue queue data in the data is placed into 6 to 7 is placed into the queue data to the queue data in 8 is placed into the data to the queue 9 is placed into the data to the queue and removed from the queue Data 8 Fetch data from the queue 7 Fetch data from the queue 6 Fetch data from the queue 5 Fetch data from the queue 4 Fetch data from the queue 3 Fetch data from the queue 2 Fetch data from the queue 1 Fetch data from the queue 0 Fetch data from the queue OK ""Copy the code

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