gistfile1.py

import csv

#Provide a list, where every element in the list corresponds to a row of the spreadsheet
#Every element in the list is another list, whose elements correspond to the columns of that row
data = [[2,3,3],[4,3,5],[2,1,4]]

#Write the data to a CSV file, which a spreadsheet program can open
with open("file_name.csv","wb") as outputfile:
    writer = csv.writer(outputfile)
    writer.writerows(data)

#Read in the data of a CSV for further processing in Python
with open("file_name.csv","rb") as inputfile:
    reader = csv.reader(inputfile)
    for row in reader:
        print row