import csv and then be able to add year revenue

[keith1569]

So basically what i want wanting to do is import a csv file and then have the user specify what year they want to add up all the total revenue.


here is what is in my csv file

2009|1|22|56.23
2009|4|12|86.24
2009|5|20|34.67
2009|6|22|12.67
2009|3|21|795.12
2008|7|4|753.43
2008|8|9|2345.45
2008|9|1|2357.23
2010|5|2|7552.21
2010|3|15|666
2010|4|17|2323.75
2010|5|19|2367.23
2010|6|25|6453
2010|2|6|1267.12

here is what i have so far

import csv

reader = csv.reader(open("/Users/keith/Desktop/revenue.csv", "rb"))
for row in reader:
    print(row)

so here i am stuck now..i want to take the revenue numbers and add them. i want the user to be able to pick the year though.

thanks
keith