Figured I would add my own [7]. I know the example prompt might seem a bit specific, but it can come in really handy sometimes (for example, iterating through get parameters). Always a fan of idiomatic and one-liner python.

I should mention that I ended up using the fourth version (seemingly the slowest) but it is actually the fastest depending on your input -- as the length of the elements gets larger, the fourth method tends to vastly outperform the others.

[7] http://stackoverflow.com/questions/16685545/elegantly-iterat...