In my post Computing argmax fast in Python, I reported that Python has no builtin function to compute argmax, the position of a maximal value. I provided one such function and asked people to improve my solution. Here are the results:
|argmax function||running time|
|max(izip(array, xrange(len(array))))||0.2 s|
Conclusion: array.index(max(array)) is simpler and faster.
Update: Please see The language interpreters are the new machines.