python 3 : yield 例子

代码如下:

def addlist(alist):
    for i in alist:
        print('a: %d' % i)
        yield i + 1
        print('b: %d\n' % i)

alist = [1, 2, 3, 4]
for x in addlist(alist):
    print('c: %d' % x)

输出内容:

a: 1
c: 2
b: 1

a: 2
c: 3
b: 2

a: 3
c: 4
b: 3

a: 4
c: 5
b: 4


Process finished with exit code 0