Re: One liners

Date	2013-12-07 10:02 -0700
From	Michael Torrie <torriem@gmail.com>
Subject	Re: One liners
References	(2 earlier) <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> <52A35324.9050504@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.3704.1386435775.18130.python-list@python.org> (permalink)

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On 12/07/2013 09:56 AM, Michael Torrie wrote:
>> extracols = sorted(set.union(*(set(t.data.keys()) for t in tracks))) if 
>> tracks else []
> 
> This is a generator expressions, and ternary ifs are common and often
> needed in generator expressions.

Oops. This is not a generator expression at all!

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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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