[Python-Dev] argmax? (original) (raw)

Miki Tebeka miki.tebeka at zoran.com
Thu Jan 8 04:08:56 EST 2004

Hello All,

Do you think there is a place for an "argmax" function (which I use a lot) in the standard library?

I'm thinking in the lines of:

def argmax(items, func, cmp=cmp): '''argmax(items, func) -> max_item, max_value''' it = iter(items) # Initial values try: item = it.next() except StopIteration: raise ValueError("can't run over empty sequence") val = func(item)

for i in it:
    v = func(i)
    if cmp(v, val) == 1:
        item = i
        val = v
return item, val

def argmin(items, func, cmp=cmp): '''argmin(items, func) -> min_item, min_value''' return argmax(items, func, lambda x,y : -cmp(x,y))

Thanks.

Smile, damn it, smile.

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"is the price of the toys" }[msg]

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