import queue

q =queue.Queue()   #FIFO

q.put(12)
q.put('hello')
q.put({"name":"yuan"})
print(q.qsize())
print(q.full())
print(q.empty())

while True:
    data = q.get()
    print(data)
    print('---')

import queue

q =queue.LifoQueue()

q.put(12)
q.put('hello')
q.put({"name":"yuan"})

while True:
    data = q.get()
    print(data)
    print('---')

import queue

q =queue.PriorityQueue()

q.put([2,12])
q.put([1,'hello'])
q.put([3,{"name":"yuan"}])

while True:
    data = q.get()
    print(data[1])
    print('---')