Python - Calculate average for every column in a csv file

Question

I\'m new in Python and I\'m trying to get the average of every (column or row) of a csv file for then select the values that are higher than the double of the average of its

Answer 1

If you want to do it without stdlib modules for some reason:

with open('path/to/csv') as infile:
    columns = list(map(float,next(infile).split(',')))
    for how_many_entries, line in enumerate(infile,start=2):
        for (idx,running_avg), new_data in zip(enumerate(columns), line.split(',')):
            columns[idx] += (float(new_data) - running_avg)/how_many_entries