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| References | (1 earlier) <52A26763.3070803@gmail.com> <CAGGBd_rsP3rU6X30W_ocF8vNrPrLBrivT+nCv-1htgehmPZWrg@mail.gmail.com> <mailman.3678.1386375653.18130.python-list@python.org> <52a287cb$0$30003$c3e8da3$5496439d@news.astraweb.com> <roy-10E325.22270006122013@news.panix.com> |
|---|---|
| Date | 2013-12-07 15:06 +1100 |
| Subject | Re: One liners |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3697.1386389163.18130.python-list@python.org> (permalink) |
On Sat, Dec 7, 2013 at 2:27 PM, Roy Smith <roy@panix.com> wrote:
> --------------------------------------------------
> extracols = sorted(set.union(*(set(t.data.keys()) for t in tracks))) if
> tracks else []
> --------------------------------------------------
> c2s = compids2songs(set(targets.keys()) |
> set.union(*map(set,targets.itervalues())),self.docmap,self.logger) if
> targets else {}
Easy rewrites:
extracols = tracks and sorted(set.union(*(set(t.data.keys()) for t in tracks)))
Assumes that tracks is a list, which it most likely is given the
context. Parallel with the other.
ChrisA
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Re: One liners Michael Torrie <torriem@gmail.com> - 2013-12-06 17:20 -0700
Re: One liners Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-07 02:28 +0000
Re: One liners Chris Angelico <rosuav@gmail.com> - 2013-12-07 13:40 +1100
Re: One liners Roy Smith <roy@panix.com> - 2013-12-06 22:27 -0500
Re: One liners Chris Angelico <rosuav@gmail.com> - 2013-12-07 15:06 +1100
Re: One liners Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-07 11:27 +0000
Re: One liners Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-12-07 14:41 +0200
Re: One liners Rotwang <sg552@hotmail.co.uk> - 2013-12-07 16:13 +0000
Re: One liners Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-07 16:25 +0000
Re: One liners Rotwang <sg552@hotmail.co.uk> - 2013-12-08 02:23 +0000
Re: One liners Michael Torrie <torriem@gmail.com> - 2013-12-07 09:26 -0700
Re: One liners Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-12-07 19:49 +0200
Re: One liners Terry Reedy <tjreedy@udel.edu> - 2013-12-07 16:02 -0500
Re: One liners Michael Torrie <torriem@gmail.com> - 2013-12-07 09:56 -0700
Re: One liners rusi <rustompmody@gmail.com> - 2013-12-07 09:10 -0800
Re: One liners Michael Torrie <torriem@gmail.com> - 2013-12-07 10:02 -0700
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