装饰器激活生成器

'''
装饰器实现激活生成器
'''
def init(func): #传参得到 func = average
    def inner(*args,**kwargs):
        g = func(*args,**kwargs)  #g = average()  g得到一个生成器
        g.__next__()    #
        return g
    return inner

@init  #average = init(average)
def average():
    sum = 0
    count = 0
    avg = 0
    while 1:
        num = yield avg
        sum+=num
        count+=1
        avg = sum/count
avg_g = average()
ret =avg_g.send(10)
print(ret)