Python Moving Average

Untitled.py

from random import randint
from itertools import islice
from __future__ import division  # For Python 2

y = [ randint(1,999) for num in range(30) ]

def window(seq, n=2):
    it = iter(seq)
    result = tuple(islice(it, n))
    if len(result) == n:
        yield result    
    for elem in it:
        result = result[1:] + (elem,)
        yield result

def moving_averages(values, size):
    for selection in window(values, size):
        yield sum(selection) / size

for avg in moving_averages(map(int, y), 5):
    print(avg)