你甚至不需要numpy或scipy…

>>> a = [1, 2, 3, 4, 5, 6]
>>> print(sum(a) / len(a))
3

def list_mean(nums):
    sumof = 0
    num_of = len(nums)
    mean = 0
    for i in nums:
        sumof += i
    mean = sumof / num_of
    return float(mean)

from statistics import mean
avarage=mean(your_list)

例如

from statistics import mean

my_list=[5,2,3,2]
avarage=mean(my_list)
print(avarage)

结果是

3.0

NumPy有一个NumPy。这是算术平均数。用法如下:

>>> import numpy
>>> a = [1, 2, 4]
>>> numpy.mean(a)
2.3333333333333335

我不知道标准库中的任何东西。然而，你可以使用这样的东西:

def mean(numbers):
    return float(sum(numbers)) / max(len(numbers), 1)

>>> mean([1,2,3,4])
2.5
>>> mean([])
0.0

在numpy中，有numpy.mean()。

使用scipy:

import scipy;
a=[1,2,4];
print(scipy.mean(a));