any modules having a function to partition a list by predicate provided?
osk.iru at gmail.com
Tue Apr 20 03:40:26 CEST 2010
On 4월20일, 오전10시16분, Chris Rebert <c... at rebertia.com> wrote:
> On Mon, Apr 19, 2010 at 6:00 PM, knifenomad <knifeno... at gmail.com> wrote:
> > i know it's not very hard to get that solution.
> > just by implementing simple function like below.
> > def partition(target, predicate):
> > """
> > split a list into two partitions with a predicate
> > provided.
> > any better ideas? :)
> > """
> > true = 
> > false= 
> > for item in target:
> > if predicates(item):
> > true.append(item)
> > else:
> > false.append(item)
> > return true, false
> > but i wonder if there's another way to do this with standard libraries
> > or .. built-ins.
> > if it's not, i'd like the list objects to have partition method like
> > string module has.
> (A) str.partition() has a /completely/ different meaning from your partition()
> (B) You'd probably have better luck getting it added to the itertools
> module since the concept is applicable to all iterables.
yep, my mistake. i shouldn't have compared it to string's partition().
i just wanted that convenience string.partition() has as a built-in.
anyway, thanks for itertools. :)
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