> The data is account name and 12.50 (example). > I want to access the data to add and subtract from it. > For example > 12.50 - 2.25 = 10.25 > 10.25 + 4.75 = 15.00
Sorry, I meant the data structures. You mentioned you had a list of tuples? And you wanted to perform addition./subtraction on members of the tuples. Therefore I assume you have something like: mydata = [(1,2),(3,4)] and you want to add 7 to, say, 4. But do you want the end result to be an updated mydata: mydata = [(1,2),(3,11)] Or do you only want to store the resuilt of the addition somewhere, like this: myvar = mydata[1][1] + 7 which leaves mydata unchanged. Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
