旧版本的Python文档中有一个很棒的滑动窗口生成器，并带有itertools示例：
from itertools import islice
def window(seq, n=2):
"Returns a sliding window (of width n) over data from the iterable"
" s -> (s0,s1,...s[n-1]), (s1,s2,...,sn), ... "
it = iter(seq)
result = tuple(islice(it, n))
if len(result) == n:
yield result
for elem in it:
result = result[1:] + (elem,)
yield result
使用您的移动平均线是微不足道的：
from __future__ import division # For Python 2
def moving_averages(values, size):
for selection in window(values, size):
yield sum(selection) / size
对您的输入运行（将字符串映射为整数）可以得到：
>>> y= ['1', '2', '3', '4','5','6','7','8','9','10']
>>> for avg in moving_averages(map(int, y), 5):
... print(avg)
...
3.0
4.0
5.0
6.0
7.0
8.0
要返回“不完整”集None的第n - 1一次迭代，只需将moving_averages函数扩展一点：
def moving_averages(values, size):
for _ in range(size - 1):
yield None
for selection in window(values, size):
yield sum(selection) / size
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