yield实现简单的生产者和消费者模型

import time
def consumer(name):
    print ('%s 开始消费...' %name)
    while True:
        commodity=yield
        print ('%s被%s消费了...' %(commodity,name))

def producer(name):
    c1=consumer('A')
    c2=consumer('B')
    c1.__next__()
    c2.__next__()
    print ('%s开始生产了...' %name)
    for i in range(10):
        time.sleep(1)
        c1.send(i)
        c2.send(i)
    return '结束了...'

producer('zhang')