큐(Queue)

import queue
 
// first in first out
data_queue = queue.Queue()
data_queue.put("testqueue")
data_queue.put(11)
data_queue.put(22)
 
data_queue.qsize()
// 3
data_queue.get()
// 'testqueue'
data_queue.get()
// 11
data_queue.get()
// 12
data_queue.qsize()
// 0
 
// last in first out
data_listqueue = queue.LifoQueue()
data_listqueue .put("testlistqueue")
data_listqueue .put(1)
 
data_listqueue.qsize()
// 2
data_listqueue.get()
// 1
 
// 우선순위 지정 리스트
data_priorityqueue = queue.PriorityQueue()
data_priorityqueue .put((10, "korea"))
data_priorityqueue .put((5, 1))
data_priorityqueue .put((15, "china"))
 
data_priorityqueue .qsize()
// 3
data_priorityqueue .get()
// 5, 1
data_priorityqueue .get()
// korea
 
// enqueue, dequeue 기능 구현
queue_list = list()
 
def enqueue(data):
    queue_list.append(data)
    
def dequeue():
    data = queue_list[0]
    del queue_list[0]
    return data
 
for index in range(10):
    enqueue(index)
 
len(queue_list)
// 10
 
dequeue()
// 0