Yield的用法和关键字return差不多,下面的函数将会返回一个生成器:
n [65]: def createGenerator():
....: mylist = range(3)
....: for i in mylist:
....: yield i*i
....:
In [66]: mygenerator = cre
createGenerator credits
In [66]: mygenerator = createGenerator()
In [67]: for i in mygenerator:
....: print i
....:
0
1
4
