BNDS_CS_alevel

array=input()
def strToList(array):
    array = array.split(',')
    for i in range(len(array)):
        array[i] = float(array[i])
    return array
def average(array):
    avg = 0
    n = len(array)
    for i in range(n):
        avg += array[i]
    avg/= n
    return (avg)
array = strToList(array)
print(average(array))

来源：CSDN

作者：JEDICORY

链接：https://blog.csdn.net/weixin_46204363/article/details/104524430