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Groups > comp.lang.python > #97319

Re: Check if a given value is out of certain range

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On Thu, Oct 1, 2015 at 3:03 PM, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> On Thu, Oct 1, 2015 at 3:45 PM, John Gordon <gordon@panix.com> wrote:
> > In <87r3le1ht3.fsf@elektro.pacujo.net> Marko Rauhamaa <marko@pacujo.net> writes:
> >> Wouldn't
> >
> >>    x < 0 or 10 < x
> >
> >> be even more visual?
> >
> > [SNIP]
> >
> > Another strike is that the code isn't consistent with itself; it puts the
> > variable on the left in the first comparison, then swaps to the right for
> > the second comparison.
>
> And on the other hand, it consistently uses the < operator rather
> than swapping to > for the second comparison.

I would argue that the former consistency is more important than the
second, mostly because my mode of thought is along the lines of:
- Do I have more than 10 apples? (x > 10) or
- Do I have fewer than 10 apples? (x < 10)
rather than
- Is 10 fewer apples than I have? (10 < x) or
- Is 10 more apples than I have? (10 > x)

Because the former set is how I think, the former set is the easier to
understand. By no means does it mean I cannot understand the later
set, but it takes more thought to parse the meaning.

If a bunch of code consistently used the second, my mind would adapt
to more easily parse it, but it would take a while to transition
between the sets, especially compared to transitioning within a set.

Chris

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Re: Check if a given value is out of certain range Rob Gaddi <rgaddi@technologyhighland.invalid> - 2015-09-29 16:48 +0000
  Re: Check if a given value is out of certain range Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-09-29 21:32 +0100
    Re: Check if a given value is out of certain range sohcahtoa82@gmail.com - 2015-09-30 11:31 -0700
      Re: Check if a given value is out of certain range Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-09-30 23:31 +0100
        Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-02 04:18 +1000
          Re: Check if a given value is out of certain range John Gordon <gordon@panix.com> - 2015-10-01 18:20 +0000
            Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-02 05:19 +1000
              Re: Check if a given value is out of certain range John Gordon <gordon@panix.com> - 2015-10-01 19:41 +0000
                Re: Check if a given value is out of certain range Marko Rauhamaa <marko@pacujo.net> - 2015-10-01 22:59 +0300
                Re: Check if a given value is out of certain range Emile van Sebille <emile@fenx.com> - 2015-10-01 13:15 -0700
                Re: Check if a given value is out of certain range John Gordon <gordon@panix.com> - 2015-10-01 21:45 +0000
                Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-01 16:03 -0600
                Re: Check if a given value is out of certain range Chris Kaynor <ckaynor@zindagigames.com> - 2015-10-01 15:48 -0700
                Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-01 16:01 -0600
                Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-03 20:29 +1000
                Re: Check if a given value is out of certain range Bartc <bc@freeuk.com> - 2015-10-03 11:48 +0100
                Re: Check if a given value is out of certain range Laura Creighton <lac@openend.se> - 2015-10-03 14:12 +0200
                Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-03 23:51 +1000
                Re: Check if a given value is out of certain range wxjmfauth@gmail.com - 2015-10-03 07:19 -0700
                Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-05 00:47 +1100
                Re: Check if a given value is out of certain range Rustom Mody <rustompmody@gmail.com> - 2015-10-04 19:28 -0700
                Re: Check if a given value is out of certain range Rustom Mody <rustompmody@gmail.com> - 2015-10-04 19:32 -0700
                Re: Check if a given value is out of certain range Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-10-03 11:49 -0400
          Re: Check if a given value is out of certain range Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-10-02 00:34 +0100
      Re: Check if a given value is out of certain range Michiel Overtoom <motoom@xs4all.nl> - 2015-10-05 10:18 +0200
        Re: Check if a given value is out of certain range Jussi Piitulainen <harvesting@makes.email.invalid> - 2015-10-05 13:08 +0300
          Re: Check if a given value is out of certain range Marko Rauhamaa <marko@pacujo.net> - 2015-10-05 14:42 +0300
            Re: Check if a given value is out of certain range Chris Angelico <rosuav@gmail.com> - 2015-10-06 00:10 +1100
              Re: Check if a given value is out of certain range Marko Rauhamaa <marko@pacujo.net> - 2015-10-05 16:25 +0300
      Re: Check if a given value is out of certain range Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-10-05 10:19 +0100
  Re: Check if a given value is out of certain range Random832 <random832@fastmail.com> - 2015-09-29 17:04 -0400
    Re: Check if a given value is out of certain range Luca Menegotto <otlucaDELETE@DELETEyahoo.it> - 2015-09-30 07:57 +0200
  Re: Check if a given value is out of certain range Emile van Sebille <emile@fenx.com> - 2015-09-29 14:07 -0700
  Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-09-29 15:07 -0600
    Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-09-30 11:55 +1000
      Re: Check if a given value is out of certain range Random832 <random832@fastmail.com> - 2015-09-29 23:08 -0400
        Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-09-30 13:14 +1000
          Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-09-29 23:54 -0600
  Re: Check if a given value is out of certain range Tim Chase <python.list@tim.thechases.com> - 2015-09-29 18:44 -0500
    Re: Check if a given value is out of certain range alister <alister.nospam.ware@ntlworld.com> - 2015-09-30 09:41 +0000
      Re: Check if a given value is out of certain range John Gordon <gordon@panix.com> - 2015-09-30 15:42 +0000
      Re: Check if a given value is out of certain range Grant Edwards <invalid@invalid.invalid> - 2015-09-30 15:56 +0000
        Re: Check if a given value is out of certain range Marko Rauhamaa <marko@pacujo.net> - 2015-09-30 21:06 +0300
          Re: Check if a given value is out of certain range alister <alister.nospam.ware@ntlworld.com> - 2015-09-30 20:19 +0000
            Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-09-30 14:46 -0600
              Re: Check if a given value is out of certain range alister <alister.nospam.ware@ntlworld.com> - 2015-10-01 08:33 +0000
                Re: Check if a given value is out of certain range Chris Angelico <rosuav@gmail.com> - 2015-10-01 18:37 +1000
                Re: Check if a given value is out of certain range alister <alister.nospam.ware@ntlworld.com> - 2015-10-01 08:48 +0000
                Re: Check if a given value is out of certain range Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-01 08:14 -0600
              Re: Check if a given value is out of certain range Steven D'Aprano <steve@pearwood.info> - 2015-10-02 04:59 +1000
            Re: Check if a given value is out of certain range Laura Creighton <lac@openend.se> - 2015-10-01 09:40 +0200
            Re: Check if a given value is out of certain range Laura Creighton <lac@openend.se> - 2015-10-01 09:58 +0200

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