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Groups > comp.lang.python > #66836

Re: Remove comma from tuples in python.

Subject Re: Remove comma from tuples in python.
From Travis Griggs <travisgriggs@gmail.com>
Date 2014-02-21 09:48 -0800
References (2 earlier) <qotbny025hh.fsf@ruuvi.it.helsinki.fi> <E%ENu.15087$PQ7.1302@fx29.am4> <20140221080032.67e536f9@bigbox.christie.dr> <mailman.7230.1392992078.18130.python-list@python.org> <roy-7DBF08.09321721022014@news.panix.com>
Newsgroups comp.lang.python
Message-ID <mailman.7231.1393004937.18130.python-list@python.org> (permalink)

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On Feb 21, 2014, at 6:32 AM, Roy Smith <roy@panix.com> wrote:

> In article <mailman.7230.1392992078.18130.python-list@python.org>,
> Peter Otten <__peter__@web.de> wrote:
> 
> 
>> [x*x for (x,) in lst]
>> 
>> [paraphrasing...] can be better written as:
>> 
>> [x*x for [x] in items]
> 
> I'm torn between, "Yes, the second form is distinctly easier to read" 
> and, "If you think the second form is easier to read, you're admitting 
> you're not really fluent in Python”.

I’ve used the comma form with struct.unpack() frequently:

count, = struct.unpack(‘!I’, self.packet)

That’s after I don’t use it and end up scratching my head for a while and finally remember that unpack returns a tuple regardless of how many things I unpack from it. It’s just natural if you’re doing lots of single unpacks to think it returns a single value. Either way, I much prefer it to:

count = struct.unpack(‘!I’, self.packet)[0]

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Thread

Remove comma from tuples in python. Jaydeep Patil <patil.jay2009@gmail.com> - 2014-02-20 22:49 -0800
  Re: Remove comma from tuples in python. Mircescu Andrei <mircescu.andrei@gmail.com> - 2014-02-20 23:02 -0800
    Re: Remove comma from tuples in python. Stephane Wirtel <stephane@wirtel.be> - 2014-02-21 08:11 +0100
    Re: Remove comma from tuples in python. Bernd Nawothnig <Bernd.Nawothnig@t-online.de> - 2014-02-21 08:20 +0100
  Re: Remove comma from tuples in python. Gary Herron <gary.herron@islandtraining.com> - 2014-02-21 00:27 -0800
    Re: Remove comma from tuples in python. Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-02-21 11:13 +0200
      Re: Remove comma from tuples in python. Alister <alister.ware@ntlworld.com> - 2014-02-21 09:29 +0000
        Re: Remove comma from tuples in python. Tim Chase <python.list@tim.thechases.com> - 2014-02-21 08:00 -0600
        Re: Remove comma from tuples in python. Peter Otten <__peter__@web.de> - 2014-02-21 15:14 +0100
          Re: Remove comma from tuples in python. Roy Smith <roy@panix.com> - 2014-02-21 09:32 -0500
            Re: Remove comma from tuples in python. Travis Griggs <travisgriggs@gmail.com> - 2014-02-21 09:48 -0800
            Re: Remove comma from tuples in python. Tim Chase <python.list@tim.thechases.com> - 2014-02-21 12:07 -0600
            Re: Remove comma from tuples in python. Cameron Simpson <cs@zip.com.au> - 2014-02-24 12:19 +1100
  Re: Remove comma from tuples in python. Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-21 14:02 +0000

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