stereo.py

#!/usr/bin/env python

def stats(f):
    nums = []
    for i, line in enumerate(f):
        nums.append(int(line.strip()))

        if i % 5 == 0:
            yield (sum(nums), min(nums), max(nums))
            nums = []

if __name__ == "__main__":
    with open('/tmp/numbers.txt') as f:
        for sum_, min_, max_ in stats(f):
            print("sum {}, min {}, max{}".format(sum_, min_, max_))