Python入门循环法计算最大值，最小值，总和，平均数

def cacluate(alist):

    blist = [0,0,0,0]

    blist[0] = alist[0]

    for i in alist:

        if blist[1] < i:

            blist[1] = i

    for i in alist:

        blist[3] += i

    blist[2] = blist[3]/4

    for i in blist:

        print(i)

alist = list(map(int,input().split(","))) #输入一行输数

alist.sort()

cacluate(alist)