python生产者和消费者模式实现(二)多进程方式

import time
import random
from multiprocessing import Process, Queue


# 生产者
def producer(q, i):
    food = 'Spam-%d' % i
    time.sleep(random.uniform(2, 5))
    timeVal = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
    print('时间：%s\t生产者：%d 生产了 %d' % (timeVal, i, i))
    q.put(food)

# 消费者
def consumer(q, i):
    while True:
        food = q.get()
        if not food:break
        time.sleep(random.uniform(1, 2))
        timeVal = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
        print('时间：%s\t消费者: %d\t吃了 %s' % (timeVal, i, food))


if __name__ == '__main__':
    q = Queue()

    producerPs = []
    for n in range(1, 16):
        producerPs.append(Process(target=producer, args=(q, n)))

    for producerP in producerPs:
        producerP.start()

    consumerPs = []
    for n in range(1, 6):
        consumerPs.append(Process(target=consumer, args=(q, n)))

    for consumerP in consumerPs:
        consumerP.start()

    for producerP in producerPs:
        producerP.join()

    for consumerP in consumerPs:
        q.put(None)

    for consumerP in consumerPs:
        consumerP.join()

    print('end')