How can I, in python, iterate over multiple 2d lists at once, cleanly?

Question

If I\'m making a simple grid based game, for example, I might have a few 2d lists. One might be for terrain, another might be for objects, etc. Unfortunately, when I need to ite

Answer 1

As a slight style change, you could use enumerate:

for i, arow in enumerate(alist):
    for j, aval in enumerate(arow):
        if aval.isWhatever():
            blist[i][j].doSomething()

I don't think you'll get anything significantly simpler unless you rearrange your data structures as Federico suggests. So that you could turn the last line into something like "aval.b.doSomething()".