compute mean in python for a generator

Question

I\'m doing some statistics work, I have a (large) collection of random numbers to compute the mean of, I\'d like to work with generators, because I just need to compute the

Answer 1

Your approach is a good one, but you should instead use the for x in y idiom instead of repeatedly calling next until you get a StopIteration. This works for both lists and generators:

def my_mean(values):
    n = 0
    Sum = 0.0

    for value in values:
        Sum += value
        n += 1
    return float(Sum)/n