I'm currently making a game in Pygame (http://www.trap17.com/forums/pygame-t38927.html), which doesn't allow animated gifs, so I need ways to store sprites and animate them. Right now I just have a bunch of nested associative arrays that are like this:

type of attack (stab, swing, not attacking) -> walking, jumping, or standing -> facing left or right -> list of images

This is all I can come up with, has anybody had success with anything different?