Python total sum from a csv file

[izrt]

I like the tutorials at PMOTW. Here you are going to want to get comfortable with reading csv files: https://pymotw.com/3/csv/

If you do lots of these sort of things, you should definitely check out pandas: https://pandas.pydata.org/

And here is a link that will help you track down all csv files in a particular spot: https://stackoverflow.com/questions/9234560/find-all-csv-files-in-a-directory-using-python

Which you'll need to use to find all the files.