生成器的阐释 

  1 # def xiadan():
  2 #     ret = []
  3 #     for i in range(10):
  4 #         ret.append('母鸡下蛋%s' %i)
  5 #     return ret
  6 # l = xiadan()
  7 # print(l)
  8 
  9 # def xiadan():
 10 #     for i in range(100):
 11 #         yield '母鸡下蛋%s' %i
 12 # res = xiadan()
 13 # print(res.__next__())
 14 # print(res.__next__())  ##生成器只能遍历一次
 15 
 16 
 17 # def test():
 18 #     print('开始了')
 19 #
 20 #     fisrt = yield 1
 21 #     print('第一次',fisrt)
 22 #
 23 #     yield 2
 24 #     print('第二次')
 25 # t = test()
 26 # res = t.__next__()
 27 # res = t.__next__()
 28 #
 29 # print(res)
 30 # t.send(None)   #可以触发生成器执行
 31 # res = t.send('函数停留在哪儿，我就在哪儿赋值')   #可以触发生成器执行
 32 # print(res)
 33 
 34 # {'name':'袁','qian':1}
 35 # {'name':'里','qian':2}
 36 # {'name':'三','qian':3}
 37 # {'name':'四','qian':4}
 38 # {'name':'五','qian':5}
 39 #
 40 
 41 # def get_polulation():
 42 #     ret = []
 43 #     with open('人口普查.py','r',encoding='utf-8') as f:
 44 #         for i in f:
 45 #             ret.append(i)
 46 #         return ret
 47 # l = get_polulation()
 48 #
 49 # print(l)
 50 
 51 
 52 # def get_polulation():
 53 #
 54 #     with open('人口普查.py','r',encoding='utf-8') as f:
 55 #         for i in f:
 56 #             yield i
 57 # l = get_polulation()
 58 # # l1 = eval(l.__next__())
 59 # print(type(l1))
 60 # res = 0
 61 # for p in l:
 62 #     pp = eval(p)
 63 #     print(pp['qian'])
 64 #     res+=pp['qian']
 65 # print(res)
 66 
 67 # a = sum(eval(i)['qian'] for i in l)
 68 #
 69 # print(a)
 70 
 71 
 72 
 73 
 74 # 生产者消费模型
 75 
 76 # import time
 77 # def producer():
 78 #     ret = []
 79 #     for i in range(10):
 80 #         time.sleep(0.1)
 81 #         ret.append('包子%s' %i)
 82 #     return ret
 83 #
 84 # def consumer(res):
 85 #     for index,baozi in enumerate(res):
 86 #         time.sleep(0.1)
 87 #         print('第%s几回，吃了%s' %(index,baozi))
 88 #
 89 # res = producer()
 90 #
 91 # consumer(res)
 92 
 93 # def text():
 94 #     print('你好呀 臭弟弟')
 95 #     yu = yield 1
 96 #     print('奥利给',yu)
 97 #     yield 2
 98 #     print('精神小伙')
 99 #     yield 999
100 #
101 # l = text()
102 # print(l.__next__())
103 # # print(l.__next__())
104 # # print(l.__next__())
105 # l.send(None)
106 
107 # import time
108 # def consumer(name):
109 #     print('我是[%s],我准备开始吃包子了' %name)
110 #     while True:
111 #         baozi = yield
112 #         time.sleep(0.2)
113 #         print('%s 很开心的把[%s]喝了' %(name,baozi))
114 #
115 # def producer():
116 #     c1 = consumer('wanqi')
117 #     c2 = consumer('yuanhao')
118 #     c1.__next__()
119 #     c2.__next__()
120 #     for i in range(10):
121 #         time.sleep(0.5)
122 #         c1.send('包子 %s' %i)
123 #         c2.send('包子%s' %i)
124 # producer()

 

posted @ 2020-03-21 10:22  luoluokang  阅读(130)  评论(0)  编辑  收藏  举报