生成器-装饰器

"""计算累计的平均值"""
"""含有装饰器的生成器函数"""
def warpper(func):
    def inner(*args,**kwargs):
        """"执行装饰器之前的操作"""
        g=func(*args,**kwargs)
        g.__next__()
        """执行装饰器之后的操作"""
        return g
    return inner
@warpper
def avgare():
    count=0
    sum=0
    avg=0
    num=0
    while True:
        num=yield num
        sum+=num
        count+=1
        avg=sum/count
        print(avg)
g=avgare()
ret=g.send(10)
ret=g.send(20)
ret=g.send(20)
ret=g.send(20)