Re: from future import pass_function

From	Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com>
Newsgroups	comp.lang.python
Subject	Re: from future import pass_function
Date	2012-07-26 08:59 +0200
Message-ID	<if67e9-gv1.ln1@satorlaser.homedns.org> (permalink)
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Am 26.07.2012 04:38, schrieb Steven D'Aprano:
> The examples of pass-as-a-function shown by the Original Poster don't
> give any clue of what advantage there is to make pass a function.

Just read the text, it just struck me how similar pass and print are, 
i.e. that neither actually needs to be a keyword. In some cases, I would 
rather use "return" to replace "pass" though.


> It appears that the only reason for this suggested change is that he
> would rather write "pass()" instead of "pass", possibly because he
> thinks it looks cool.

I have no idea where you got the "cool" from, it is not in my posting. I 
stated clearly that "I just had an idea", which should signal that I 
haven't thought about this for any extended period of time. Then I asked 
"What do you think?" exactly because I wanted to discuss this. No need 
to get defensive. ;)


> (Actually, I reckon that what is driving this idea is that the OP is a
> beginner, and he's got a syntax error a few times from writing "pass()",
> and so he thought it would be easier to force other people to change tens
> or hundreds of thousands of Python programs to use "pass()" instead of
> "pass" than to just learn to stop putting parentheses after it.

So, and in order to force people to write parens or break their code I 
have considered the possibility of importing that feature from 
__future__ for those people that want it? Seriously, Steven, as much as 
I like your regular contributions here, this time you had better logged 
off and taken a walk, because you come across as _very_ arrogant here.


> But of course I could be wrong. Ulrich, if you are still reading this, if
> you have good examples for how pass as a function would actually be
> better, and how it will let you do things in Python that can't easily be
> done now, I'm very interested to hear them. Who knows, if the idea is
> good enough, some day it may even happen.

No there is nothing that you strictly need a pass() function for.


In summary, after reading this thread I have a lot of good arguments 
against this idea and few arguments supporting the idea. In any case I 
have many more arguments than those that I came up with myself, which is 
exactly what I asked for.


Thanks to all that took part in this discussion!

Uli

Thread

from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-25 10:40 +0200
  Re: from future import pass_function Philipp Hagemeister <phihag@phihag.de> - 2012-07-25 12:30 +0200
  Re: from future import pass_function Nicholas Cole <nicholas.cole@gmail.com> - 2012-07-25 11:33 +0100
  Re: from future import pass_function Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-07-25 07:02 -0400
  Re: from future import pass_function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-25 11:33 +0000
    Re: from future import pass_function Ross Ridge <rridge@csclub.uwaterloo.ca> - 2012-07-25 21:42 -0400
      Re: from future import pass_function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-26 02:38 +0000
        Re: from future import pass_function Ross Ridge <rridge@csclub.uwaterloo.ca> - 2012-07-25 23:30 -0400
          Re: from future import pass_function Chris Angelico <rosuav@gmail.com> - 2012-07-26 13:53 +1000
            Re: from future import pass_function Ross Ridge <rridge@csclub.uwaterloo.ca> - 2012-07-26 00:03 -0400
              Re: from future import pass_function Ethan Furman <ethan@stoneleaf.us> - 2012-07-25 21:32 -0700
                Re: from future import pass_function John Ladasky <john_ladasky@sbcglobal.net> - 2012-07-26 13:55 -0700
                Re: from future import pass_function Ethan Furman <ethan@stoneleaf.us> - 2012-07-26 14:23 -0700
                Re: from future import pass_function John Ladasky <john_ladasky@sbcglobal.net> - 2012-07-26 15:20 -0700
                Re: from future import pass_function John Ladasky <john_ladasky@sbcglobal.net> - 2012-07-26 15:20 -0700
                Re: from future import pass_function John Ladasky <john_ladasky@sbcglobal.net> - 2012-07-26 13:55 -0700
              Re: from future import pass_function Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-07-26 08:43 +0100
          Re: from future import pass_function alex23 <wuwei23@gmail.com> - 2012-07-25 21:20 -0700
        Re: from future import pass_function Rusi <rustompmody@gmail.com> - 2012-07-25 22:09 -0700
        Re: from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-26 08:59 +0200
          Re: from future import pass_function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-26 09:26 +0000
            Re: from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-26 13:45 +0200
              Re: from future import pass_function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-26 15:21 +0000
                Re: from future import pass_function Joel Goldstick <joel.goldstick@gmail.com> - 2012-07-26 12:55 -0400
                RE: from future import pass_function "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-07-26 17:19 +0000
                Re: from future import pass_function Chris Angelico <rosuav@gmail.com> - 2012-07-27 03:33 +1000
                Re: from future import pass_function Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-07-27 00:25 +0100
                Re: from future import pass_function Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-07-27 00:23 +0100
      Re: from future import pass_function alex23 <wuwei23@gmail.com> - 2012-07-25 21:17 -0700
  Re: from future import pass_function Chris Angelico <rosuav@gmail.com> - 2012-07-26 02:05 +1000
    Re: from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-26 08:39 +0200
      Re: from future import pass_function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-26 08:36 +0000
      Re: from future import pass_function Terry Reedy <tjreedy@udel.edu> - 2012-07-26 10:38 -0400
  Re: from future import pass_function Ethan Furman <ethan@stoneleaf.us> - 2012-07-25 09:28 -0700
  Re: from future import pass_function Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-07-25 12:48 -0400
  Re: from future import pass_function Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-07-25 14:17 -0400
  Re: from future import pass_function Michael Hrivnak <mhrivnak@hrivnak.org> - 2012-07-26 01:20 -0400
    Re: from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-26 08:42 +0200
      Re: from future import pass_function Michael Hrivnak <mhrivnak@hrivnak.org> - 2012-07-26 17:15 -0400
  Re: from future import pass_function Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-07-26 08:50 +0100
    Re: from future import pass_function Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-27 08:39 +0200
  Re: from future import pass_function Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-07-26 05:16 -0400
  Re: from future import pass_function Chris Angelico <rosuav@gmail.com> - 2012-07-26 19:42 +1000
  Re: from future import pass_function Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-07-26 06:00 -0400
  Re: from future import pass_function rusi <rustompmody@gmail.com> - 2012-07-26 08:01 -0700
  Re: from future import pass_function Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-07-26 14:01 -0400
  Re: from future import pass_function Chris Angelico <rosuav@gmail.com> - 2012-07-27 04:14 +1000
  Re: from future import pass_function John Ladasky <john_ladasky@sbcglobal.net> - 2012-07-26 13:48 -0700
    Re: from future import pass_function Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-26 15:18 -0600
    Re: from future import pass_function Ethan Furman <ethan@stoneleaf.us> - 2012-07-26 15:35 -0700
    Re: from future import pass_function Terry Reedy <tjreedy@udel.edu> - 2012-07-27 00:21 -0400
  Re: from future import pass_function Michael Hrivnak <mhrivnak@hrivnak.org> - 2012-07-26 17:20 -0400

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