Python项目实践：基本统计值计算

# CalStatisticsV1.py
def getNum():
    nums = []
    numsstr = input("请输入数字（回车退出)：")
    while numsstr != "":
        nums.append(eval(numsstr))
        numsstr = input("请输入数字（回车退出)：")
    return nums

def mean(numbers):
    s = 0.0
    for num in numbers:
        s += num
    return s / len(numbers)

def dev(numbers, mean):
    sdev = 0.0
    for num in numbers:
        sdev += (num - mean) ** 2
    return pow(sdev / (len(numbers) - 1), 0.5)

def median(numbers):
    numbers.sort()
    if len(numbers) % 2 == 0:
        med = (numbers[len(numbers)//2-1] + numbers[len(numbers)//2]) / 2
    else:
        med = numbers[len(numbers)//2]
    return med

n = getNum()
m = mean(n)
print("平均值：{},方差：{},中位数：{}".format(m, dev(n, m), median(n)))

PS: source, python123