python基础一 day37 Queue

# 队列
# 生产者消费者模型

# 生产者 进程
# 消费者 进程
import time
import random
from multiprocessing import Process,Queue
def consumer(q,name):
while True:
food = q.get()
if food is None:
print('%s获取到了一个空'%name)
break
print('\033[31m%s消费了%s\033[0m' % (name,food))
time.sleep(random.randint(1,3))

def producer(name,food,q):
for i in range(4):
time.sleep(random.randint(1,3))
f = '%s生产了%s%s'%(name,food,i)
print(f)
q.put(f)

if __name__ == '__main__':
q = Queue(20)
p1 = Process(target=producer,args=('Egon','包子',q))
p2 = Process(target=producer, args=('wusir','泔水', q))
c1 = Process(target=consumer, args=(q,'alex'))
c2 = Process(target=consumer, args=(q,'jinboss'))
p1.start()
p2.start()
c1.start()
c2.start()
p1.join()
p2.join()
q.put(None)
q.put(None)