Look here about CSV files https://docs.python.org/3.3/library/csv.html If you want to work with CSV files you are essentially dealing with small databases. Why THE FUCK do you not give any meaningful examples towards that goal. Something like this that I had to go digging for and took forever to find (NOT ON YOUR SHITTY SITE OF COURSE) THIS IS ONLY ONE EXAMPLE OUT OF 100's OF WHY YOUR SITE IS WORTHLESS FUCK YOU DICKHEADS!!!!! for row in myreader: id, name, volt = row bus_id.append(id) bus_names.append(name) voltage.append(float(volt))