Re: Why did Quora choose Python for its development?

From	RainyDay <andrei.avk@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: Why did Quora choose Python for its development?
Date	2011-05-26 16:41 -0700
Organization	http://groups.google.com
Message-ID	<49c04cf9-88a6-4ed8-af10-64bd4e372e40@gc3g2000vbb.googlegroups.com> (permalink)
References	(12 earlier) <BANLkTi=N-b4-3HdaRSMy9kk8S_xu3uBkQg@mail.gmail.com> <2C6966D5AB6541E3BCE920FE7883A05B@octavian> <BANLkTi=yYxeAF_xVzcji=TNou46aeAjrSQ@mail.gmail.com> <EDC9E4E3C14147A8A33C1D050BBE1CE9@teddy> <mailman.2133.1306445636.9059.python-list@python.org>

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On May 26, 5:33 pm, Daniel Kluev <dan.kl...@gmail.com> wrote:
> On Wed, May 25, 2011 at 3:10 AM, Octavian Rasnita <orasn...@gmail.com> wrote:
> >> Once again. Suppose we have array of key-value pairs (two-dimensional
> >> array),
>
> > This is a forced example to fit the way Python can do it with a clean syntax, but I don't think there are cases in which somebody wants to create hashes/dictionaries where the key is not a plain string but an array.
>
> > This is not a rare case, but a case that probably nobody needs, ever.
>
> This is far more popular case than converting flat lists into dicts in
> Python world. In fact, I *never* had need to convert flat list instead
> of properly structured one. Thats why we have both lists and tuples,
> after all.

I agree that it's almost never needed to convert flat
lists. I've used python for over 10 years and I remember
exactly one time when I needed to do that. It turned out
that it's a bit tricky and hacky to do in python, in
the sense that it's hard to remember if I'll ever need
it again, but it will only take minutes to google it.

For example, in one piece of code I did recently I
created a dict of range tuples and counts from a sequential list, like
so:

ranges = [(x*width, (x+1)*width) for x in range(y)]
data = dict((x,0) for x in ranges)

A perl programmer would instead create a flat list
and then convert it to dict. And if he were new to
python he'd create a flat list and then be annoyed
that there's no quick and easy way to make it into
a dict.

Python way in this case is more structured and
disciplined, and the only "flaw" I can see is that
it doesn't meet expectations of perl programmers.

 -Rainy

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Why did Quora choose Python for its development? Beliavsky <beliavsky@aol.com> - 2011-05-20 09:39 -0700
  Re: Why did Quora choose Python for its development? Dotan Cohen <dotancohen@gmail.com> - 2011-05-20 23:47 +0300
  Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-22 15:01 +1000
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-22 10:44 +0300
    Re: Why did Quora choose Python for its development? Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2011-05-23 12:56 +0200
      Re: Why did Quora choose Python for its development? Duncan Booth <duncan.booth@invalid.invalid> - 2011-05-23 11:28 +0000
      Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 08:25 +0300
    Re: Why did Quora choose Python for its development? Kevin Walzer <kw@codebykevin.com> - 2011-05-24 10:09 -0400
      Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 00:43 +1000
      Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 19:11 +0300
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-22 19:20 +1100
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-22 15:47 +0300
  Re: Why did Quora choose Python for its development? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-05-22 12:09 -0700
  Re: Why did Quora choose Python for its development? Terry Reedy <tjreedy@udel.edu> - 2011-05-22 18:01 -0400
    Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-22 18:55 -0500
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-23 10:42 +1100
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 08:31 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 09:06 +0300
  Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-23 16:37 +1000
    Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-23 10:26 -0500
  Re: Why did Quora choose Python for its development? Terry Reedy <tjreedy@udel.edu> - 2011-05-23 02:37 -0400
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-23 19:05 +1100
  Re: Why did Quora choose Python for its development? Aleksandar Radulovic <alex@a13x.net> - 2011-05-23 08:52 +0000
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 11:49 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 12:01 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 12:41 +0300
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-23 20:58 +1100
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-23 21:16 +1100
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 14:17 +0300
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-23 22:32 +1100
  Re: Why did Quora choose Python for its development? Terry Reedy <tjreedy@udel.edu> - 2011-05-23 13:08 -0400
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 22:05 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-23 14:10 +0300
    Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 00:17 -0500
      Re: Why did Quora choose Python for its development? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-05-24 06:09 -0400
        Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 11:52 -0500
          Re: Why did Quora choose Python for its development? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-05-24 13:39 -0400
            Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 13:17 -0500
              Re: Why did Quora choose Python for its development? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-05-27 15:48 +1200
                Re: Why did Quora choose Python for its development? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-05-26 23:53 -0700
                Re: Why did Quora choose Python for its development? Roy Smith <roy@panix.com> - 2011-05-27 09:47 -0400
                Re: Why did Quora choose Python for its development? Karim <karim.liateni@free.fr> - 2011-05-27 22:10 +0200
            Re: Why did Quora choose Python for its development? "thegist@nospam.net" <thegist@nospam.net> - 2011-05-25 17:30 -0400
              Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-25 23:52 +0000
                Re: Why did Quora choose Python for its development? "thegist@nospam.net" <thegist@nospam.net> - 2011-05-26 11:05 -0400
          Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 08:01 +1000
            Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 18:16 -0500
              Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 09:38 +1000
                Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 20:48 -0500
            Re: Why did Quora choose Python for its development? Thorsten Kampe <thorsten@thorstenkampe.de> - 2011-05-25 09:31 +0200
              Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-25 07:01 -0500
                Re: Why did Quora choose Python for its development? Terry Reedy <tjreedy@udel.edu> - 2011-05-25 12:54 -0400
                Re: Why did Quora choose Python for its development? Ethan Furman <ethan@stoneleaf.us> - 2011-05-25 10:17 -0700
                Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-25 14:14 -0500
                Re: Why did Quora choose Python for its development? Matty Sarro <msarro@gmail.com> - 2011-05-25 17:19 -0400
                Re: Why did Quora choose Python for its development? Neil Cerutti <neilc@norwich.edu> - 2011-05-26 12:44 +0000
                Re: Why did Quora choose Python for its development? Roy Smith <roy@panix.com> - 2011-05-26 08:51 -0400
                Re: Why did Quora choose Python for its development? Ben Finney <ben+python@benfinney.id.au> - 2011-05-26 23:11 +1000
                Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-26 13:35 +0000
                Re: Why did Quora choose Python for its development? RainyDay <andrei.avk@gmail.com> - 2011-05-25 17:15 -0700
                Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-25 23:01 +0000
                Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-25 22:00 -0500
                Re: Why did Quora choose Python for its development? Ben Finney <ben@benfinney.id.au> - 2011-05-26 14:25 +1000
                Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-26 10:36 -0500
                Re: Why did Quora choose Python for its development? Terry Reedy <tjreedy@udel.edu> - 2011-05-26 16:03 -0400
                Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-27 03:07 +0000
                Re: Why did Quora choose Python for its development? Thorsten Kampe <thorsten@thorstenkampe.de> - 2011-05-27 10:10 +0200
                Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-27 09:31 +0000
                Re: Why did Quora choose Python for its development? Ethan Furman <ethan@stoneleaf.us> - 2011-05-27 10:12 -0700
                Re: Why did Quora choose Python for its development? Karim <karim.liateni@free.fr> - 2011-05-26 22:27 +0200
                Re: Why did Quora choose Python for its development? Ethan Furman <ethan@stoneleaf.us> - 2011-05-26 09:18 -0700
                Re: Why did Quora choose Python for its development? Thorsten Kampe <thorsten@thorstenkampe.de> - 2011-05-26 10:24 +0200
            Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-25 23:25 +0000
          Re: Why did Quora choose Python for its development? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-05-24 23:00 -0700
            Re: Why did Quora choose Python for its development? Roy Smith <roy@panix.com> - 2011-05-25 07:36 -0400
              Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 21:55 +1000
                Re: Why did Quora choose Python for its development? Roy Smith <roy@panix.com> - 2011-05-25 08:25 -0400
              Re: Why did Quora choose Python for its development? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-05-25 10:23 -0400
                Re: Why did Quora choose Python for its development? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-25 14:56 +0000
                Re: Why did Quora choose Python for its development? Matty Sarro <msarro@gmail.com> - 2011-05-25 11:43 -0400
              Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-26 00:26 +1000
      Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 19:10 +0300
      Re: Why did Quora choose Python for its development? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-05-24 13:22 -0400
      Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 11:08 +0300
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-24 14:34 +1100
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 08:39 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 09:00 +0300
  Re: Why did Quora choose Python for its development? Stefan Behnel <stefan_ml@behnel.de> - 2011-05-24 08:23 +0200
    Re: Why did Quora choose Python for its development? Kevin Walzer <kw@codebykevin.com> - 2011-05-24 10:50 -0400
      Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 19:18 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 11:10 +0300
  Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-24 18:20 +1000
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-24 19:55 +1100
  Re: Why did Quora choose Python for its development? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-05-24 06:05 -0400
    Re: Why did Quora choose Python for its development? Teemu Likonen <tlikonen@iki.fi> - 2011-05-24 16:18 +0300
      Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 11:50 -0500
        Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 03:30 +1000
          Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 12:56 -0500
            Re: Why did Quora choose Python for its development? Chris Angelico <rosuav@gmail.com> - 2011-05-25 07:53 +1000
              Re: Why did Quora choose Python for its development? John Bokma <john@castleamber.com> - 2011-05-24 17:00 -0500
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 19:10 +0300
  Re: Why did Quora choose Python for its development? "Octavian Rasnita" <orasnita@gmail.com> - 2011-05-24 19:10 +0300
  Re: Why did Quora choose Python for its development? "thegist@nospam.net" <thegist@nospam.net> - 2011-05-26 11:52 -0400
  Re: Why did Quora choose Python for its development? Daniel Kluev <dan.kluev@gmail.com> - 2011-05-27 08:33 +1100
    Re: Why did Quora choose Python for its development? RainyDay <andrei.avk@gmail.com> - 2011-05-26 16:41 -0700

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