[Python-Dev] [Python-ideas] minmax() function returning (minimum, maximum) tuple of a sequence (original) (raw)
Carl M. Johnson cmjohnson.mailinglist at gmail.com
Mon Oct 11 07:56:47 CEST 2010
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On Sun, Oct 10, 2010 at 2:55 PM, Zac Burns <zac256 at gmail.com> wrote:
This could be generalized and placed into itertools if we create a function (say, apply for lack of a better name at the moment) that takes in an iterable and creates new iterables that yield each from the original (avoiding the need for a list) holding only one in memory. Then you could pass the whatever function you wanted to run the iterables over an get the result back in a tuple.
Time machine partially beat you to this one. Look at the docs on itertools.tee
tee(it, n=2) --> (it1, it2 , ... itn) splits one iterator into n
Can be used like so:
it = iter(range(100)) it1, it2 = itertools.tee(it) max(it1) 99 min(it2) 0
This doesn't quite have the memory characteristics you describe, but it's about as good as you can expect in a single threaded environment.
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