> What if I were to use ID's for the students and use the ID's as the > sequence > index, and link the students and their grades to the IDs?
Its not necessary for what you are doing but it's how you'd normally do it in a relational database, so if you ever needed to turn your file based program into a full blown database then using IDs would actually help! The other thing you could do is hold all the data for a single student in one structure. Thus instead of having lots of lists all linked by a common index (or ID) you have one collection of students (probably a dictionary keyed by name) each with all of its own data. This involves a more complex data structure and is a move in the direction of object oriented programming but without actual classes and objects being involved. This might also allow you to use the shelve moduile to save/restore your data to file easily. Just a thought, Alan G. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
