20 sum()函数及自定义函数复习（学习啊）

def func(lst):
    sum = 0
    avg = 0
    for i in range(len(lst)):
        sum += lst[i]
        avg = sum/len(lst)
    return (sum,avg)
    # print(sum,avg)

l = [1,2,3,4,5]
print(func(l))

2）进阶版
def getMaxMinAvgoflist(list):
    Max = max(list)
    Min = min(list)
    sum = 0.0
    for i in range(len(list)):
        sum += list[i]
        Avg = 1.0*sum/len(list)
    print('max:{},min:{},ave:{}'.format(Max,Min,Avg))
 # return  (Max,Min,Avg)  # 函数的返回值为元组

l = []
geshu = int(input('请输入你需要的个数:'))
for i in range(geshu):
    temp = input('请输入%d个数:'%(i+1))
    temp = float(temp)
    l.append(temp)

getMaxMinAvgoflist(l)