怎样让python多次调用函数.让函数返回的值相加

Question

def a():
z=随机数+随机数
while i<999:

z() 
i+=1

怎样才能让Z的值相加

Answer 1

def a():
    z = 0
    while 1:
        z = 随机 + 随机
        yield z
      
while i<999:

    res = a() 
    print(res)
    i+=1

Answer 2

sum(z() for _ in range(999))