Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #111247

Re: Quick poll: gmean or geometric_mean

From Ian Kelly <ian.g.kelly@gmail.com>
Newsgroups comp.lang.python
Subject Re: Quick poll: gmean or geometric_mean
Date 2016-07-10 08:55 -0600
Message-ID <mailman.165.1468162571.2295.python-list@python.org> (permalink)
References (3 earlier) <CAGgTfkM_ts1ghL=JtmV5Pa85T_8MTveL1vm5d2jg9Kv+SiYE+g@mail.gmail.com> <mailman.163.1468142670.2295.python-list@python.org> <57821eaa$0$1584$c3e8da3$5496439d@news.astraweb.com> <1014e463-20b0-446f-96f6-c142587f4b82@googlegroups.com> <CALwzidkzMuvsK+CQQ98xgwPYSAotRwcyL3CM_ckqWoWaGwwKpQ@mail.gmail.com>

Show all headers | View raw

On Sun, Jul 10, 2016 at 8:29 AM, Rustom Mody <rustompmody@gmail.com> wrote:
> Newton's law F = -Gm₁m₂/r²
>
> Better seen in its normal math form:
> https://en.wikipedia.org/wiki/Newton%27s_law_of_universal_gravitation#Modern_form
>
> De-abbreviated
>
> Force is given by the negative of the universal_gravitational_constant times
> the mass_of_first_body times mass_of_second_body divided by the square of the distance_between_the_bodies
>
> Cobol anyone?
>
> Ok with typical python naming
>
> Force = (universal_gravitational_constant * mass_of_first_body * mass_of_second_body) / (distance_between_the_bodies*distance_between_the_bodies)

That's still excessive by any reasonable standards. Names should be
descriptive, but no more verbose than necessary. How about:

force_N = -G * mass1_kg * mass2_kg / distance_m ** 2

I'm fine with "G" as is because it's the standard name for the value
in physics contexts, and it's presumably defined in the code as a
constant. It's every bit as clear as "pi".

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Quick poll: gmean or geometric_mean Steven D'Aprano <steve@pearwood.info> - 2016-07-09 15:26 +1000
  Re: Quick poll: gmean or geometric_mean Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-09 08:43 +0300
  Re: Quick poll: gmean or geometric_mean Random832 <random832@fastmail.com> - 2016-07-09 01:49 -0400
  Re: Quick poll: gmean or geometric_mean Ethan Furman <ethan@stoneleaf.us> - 2016-07-08 23:27 -0700
  Re: Quick poll: gmean or geometric_mean Peter Otten <__peter__@web.de> - 2016-07-09 11:04 +0200
    Re: Quick poll: gmean or geometric_mean Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-12 15:13 -0700
      Re: Quick poll: gmean or geometric_mean Chris Angelico <rosuav@gmail.com> - 2016-07-13 08:17 +1000
  Re: Quick poll: gmean or geometric_mean Stefan Behnel <stefan_ml@behnel.de> - 2016-07-09 12:23 +0200
  Re: Quick poll: gmean or geometric_mean Ethan Furman <ethan@stoneleaf.us> - 2016-07-09 06:51 -0700
  Re: Quick poll: gmean or geometric_mean Jason Friedman <jsf80238@gmail.com> - 2016-07-09 08:16 -0600
  Re: Quick poll: gmean or geometric_mean Michael Selik <michael.selik@gmail.com> - 2016-07-09 16:13 +0000
  Re: Quick poll: gmean or geometric_mean Robert Kern <robert.kern@gmail.com> - 2016-07-09 17:53 +0100
  Re: Quick poll: gmean or geometric_mean Michael Selik <michael.selik@gmail.com> - 2016-07-09 18:31 +0000
  Re: Quick poll: gmean or geometric_mean Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-09 17:39 -0400
  Re: Quick poll: gmean or geometric_mean Chris Angelico <rosuav@gmail.com> - 2016-07-10 07:45 +1000
  Re: Quick poll: gmean or geometric_mean Rustom Mody <rustompmody@gmail.com> - 2016-07-10 00:28 -0700
    Re: Quick poll: gmean or geometric_mean Steven D'Aprano <steve@pearwood.info> - 2016-07-10 18:51 +1000
      Re: Quick poll: gmean or geometric_mean Michael Selik <michael.selik@gmail.com> - 2016-07-10 09:24 +0000
        Re: Quick poll: gmean or geometric_mean Steven D'Aprano <steve@pearwood.info> - 2016-07-10 20:08 +1000
          Re: Quick poll: gmean or geometric_mean Chris Angelico <rosuav@gmail.com> - 2016-07-10 21:07 +1000
          Re: Quick poll: gmean or geometric_mean Rustom Mody <rustompmody@gmail.com> - 2016-07-10 07:29 -0700
            Re: Quick poll: gmean or geometric_mean Rustom Mody <rustompmody@gmail.com> - 2016-07-10 07:44 -0700
            Re: Quick poll: gmean or geometric_mean Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-10 08:55 -0600
              Re: Quick poll: gmean or geometric_mean Marko Rauhamaa <marko@pacujo.net> - 2016-07-10 18:03 +0300
                Re: Quick poll: gmean or geometric_mean Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-10 11:15 -0600
                Re: Quick poll: gmean or geometric_mean Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-12 15:17 -0700
                Re: Quick poll: gmean or geometric_mean alister <alister.ware@ntlworld.com> - 2016-07-12 22:57 +0000
                Re: Quick poll: gmean or geometric_mean Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-12 18:42 -0700
                Re: Quick poll: gmean or geometric_mean Gene Heskett <gheskett@shentel.net> - 2016-07-12 21:58 -0400
                Re: Quick poll: gmean or geometric_mean alister <alister.ware@ntlworld.com> - 2016-07-13 13:03 +0000
                Re: Quick poll: gmean or geometric_mean Steven D'Aprano <steve@pearwood.info> - 2016-07-13 12:25 +1000
                Re: Quick poll: gmean or geometric_mean Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-10 19:21 -0400
            Re: Quick poll: gmean or geometric_mean Random832 <random832@fastmail.com> - 2016-07-10 12:08 -0400
            Re: Quick poll: gmean or geometric_mean Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-12 15:19 -0700
          Re: Quick poll: gmean or geometric_mean Michael Selik <michael.selik@gmail.com> - 2016-07-10 15:43 +0000
  Re: Quick poll: gmean or geometric_mean Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-10 01:28 -0600
    Re: Quick poll: gmean or geometric_mean Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-10 11:01 +0300
      Re: Quick poll: gmean or geometric_mean Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-10 09:04 -0600

csiph-web