How do I find the total in an object?

[Jackwaters]

I am building a music store example in python. I am trying to find a way of displaying the total of all of the sales of all of the music.

Everything is stored in objects in a list trackList. Track is the object so track.sales returns the sales of particular track.

This is what I have so far:

def totalSales(trackList):
    for track in trackList:
        total = sum(track.sales)
    print total

I'm really struggling so any help would be great.

[Glenton]

def totalSales(trackList):
    total=0
    for track in trackList:
        total += track.sales
    print total

[Jackwaters]

Thanks, works perfectly.