shell

yield 生成器例子

 1 #!/usr/bin/env python
 2 #encoding: utf-8
 3 import time
 4 def consumer(name):
 5     print ('%s 来吃包子了。。。' % (name))
 6     while True:
 7         baizi = yield  #执行到这会暂停,直到调用next的方法,然后在从这里执行
 8         print ("包子 [%s] 来了, 被 [%s] 吃了,,," % (baizi,name))
 9 
10 def producer():
11     c1 = consumer('lys')  #生成迭代器
12     c2 = consumer('zhy')
13     c1.__next__()  #迭代
14     c2.__next__()
15     for i in range(3):
16         print ('开始重新做包子了,,,')
17         time.sleep(1)
18         print ('做好了2个。来吃吧,,,')
19         c1.send(i) #发送给yied,接收参数
20         c2.send(i)
21 
22 producer()

 

posted @ 2016-10-30 14:43  devops运维  阅读(190)  评论(0编辑  收藏  举报
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