yield实现单线程异步

#!/usr/bin/env python 
# -*- coding: utf-8 -*- 
# @Time : 2018-01-22 22:09 
# @Author :  hhj
# @Site :  
# @File : yield单线程异步.py
import  time

def consumer(name):
    print("%s 准备吃包子啦" %name)
    while True:
        baozi = yield  #接收值 
        print("包子[%s]来了，被[%s]吃了！" %(baozi,name))

def producer(name):
    c = consumer("A")
    c2 = consumer("B")
    c.__next__()   
    c2.__next__()
    print("我开始准备做包子了")
    for i in range(10):
        time.sleep(1)
        print("做了两个包子")
        c.send(i) #发送值
        c2.send(i)

producer("hhj")