Re: psss...I want to move from Perl to Python

From	James Harris <james.harris.1@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: psss...I want to move from Perl to Python
Date	2016-01-29 11:03 +0000
Organization	A noiseless patient Spider
Message-ID	<n8fgpe$qsj$1@dont-email.me> (permalink)
References	<n8ea4q$muu$1@gioia.aioe.org> <mailman.70.1454027549.2338.python-list@python.org> <56ab10f4$0$1606$c3e8da3$5496439d@news.astraweb.com> <n8fadj$qra$1@news2.informatik.uni-stuttgart.de>

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On 29/01/2016 09:12, Ulli Horlacher wrote:
> Steven D'Aprano <steve@pearwood.info> wrote:
>
>> Every time I make a half-hearted attempt to learn enough Perl syntax to get
>> started, I keep running into the differences between $foo, %foo and @foo
>> and dire warnings about what happens if you use the wrong sigil
>
> I have started learning Python several times and surrendered because my
> brain was too Perl hardcoded after 30 years, but NOW I was successful :-)

I nearly gave up with Python at the very beginning before I realised not 
to mix tabs and spaces.

> (I still find Perl syntax better...)

Perl may be easier to 'think in' for those who are familiar with it. 
Perl syntax is shorter. And expressions have fewer elements as some 
operands are implied.

Python's constructions are more explicit, making the effect more 
apparent in the source.

> About the variables in short:
>
> $foo is a scalar (number, string, reference, file handle)
> @foo is an array
> %foo is a hash (dictionary in Python slang)
>
> and yes, you can use them all together in same code, they are different.

IIRC it's not quite that simple in that the type depends on the context 
that Perl thinks is current. I won't go into detail as this is not a 
Perl group but I found Perl horrible to work with. It is slick but also 
cryptic.

James

Thread

psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-28 19:01 -0500
  Re: psss...I want to move from Perl to Python paul.hermeneutic@gmail.com - 2016-01-28 17:22 -0700
  Re: psss...I want to move from Perl to Python Nathan Hilterbrand <nhilterbrand@gmail.com> - 2016-01-28 19:21 -0500
    Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-28 19:23 -0800
      Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 14:26 +1100
    Re: psss...I want to move from Perl to Python wxjmfauth@gmail.com - 2016-01-30 02:26 -0800
      Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-31 17:34 -0500
        Re: psss...I want to move from Perl to Python Michael Torrie <torriem@gmail.com> - 2016-01-31 16:45 -0700
        Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-02-01 10:48 +1100
        Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-31 18:51 -0500
          Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 18:59 -0800
            Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-02-01 14:15 +1100
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 19:43 -0800
              Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-02-02 14:53 -0800
  Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 11:25 +1100
    Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-29 18:12 +1100
      Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 18:19 +1100
      Re: psss...I want to move from Perl to Python Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2016-01-29 09:12 +0000
        Re: psss...I want to move from Perl to Python James Harris <james.harris.1@gmail.com> - 2016-01-29 11:03 +0000
          Re: psss...I want to move from Perl to Python Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2016-01-29 12:21 +0000
            Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-30 00:46 +1100
              Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 09:47 +1100
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-30 22:12 +1100
            Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-29 13:30 -0800
              Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 19:57 -0500
                Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 12:04 +1100
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-29 19:38 -0800
                Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-31 11:18 +1300
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-01-31 12:56 +1100
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-30 19:22 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 14:48 +1100
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-30 19:53 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 20:56 +1100
                Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-31 09:45 -0800
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 18:08 -0800
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-31 20:23 +1100
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 20:53 +1100
                Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-31 09:49 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-02-01 08:16 +1100
                Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-31 07:28 -0500
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 05:12 -0800
                Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-30 14:25 -0800
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-29 20:04 -0800
        Re: psss...I want to move from Perl to Python Random832 <random832@fastmail.com> - 2016-01-29 10:07 -0500
          Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 12:56 -0500
          Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-30 11:21 +1300
        Re: psss...I want to move from Perl to Python sohcahtoa82@gmail.com - 2016-01-29 12:49 -0800
          Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-29 14:29 -0800
      Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-30 10:48 +1100
  Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-29 12:20 +1100
  Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-28 18:06 -0800
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 13:34 +1100
      Re: psss...I want to move from Perl to Python sohcahtoa82@gmail.com - 2016-01-29 12:41 -0800
        Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 07:54 +1100
        Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-30 11:27 +1300
    Re: psss...I want to move from Perl to Python Michael Torrie <torriem@gmail.com> - 2016-01-28 21:42 -0700
    Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-01-29 08:54 -0500
  Re: psss...I want to move from Perl to Python Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-01-29 08:24 +0200
  Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-01-29 08:50 -0500
  Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 12:04 -0500
  Re: psss...I want to move from Perl to Python "Sven R. Kunze" <srkunze@mail.de> - 2016-01-29 18:39 +0100
  Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 15:42 -0500
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 07:51 +1100
    Re: psss...I want to move from Perl to Python Nathan Hilterbrand <nhilterbrand@gmail.com> - 2016-01-29 16:38 -0500
    Re: psss...I want to move from Perl to Python Cody Piersall <cody.piersall@gmail.com> - 2016-01-29 15:50 -0600
      Re: psss...I want to move from Perl to Python Josef Pktd <josef.pktd@gmail.com> - 2016-01-29 16:48 -0800
    Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-29 22:08 -0500
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 14:12 +1100
  Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 09:49 +1100
  Re: psss...I want to move from Perl to Python Larry Hudson <orgnut@yahoo.com> - 2016-01-29 22:22 -0800
  Re: psss...I want to move from Perl to Python "Sven R. Kunze" <srkunze@mail.de> - 2016-01-30 13:43 +0100
  Re: psss...I want to move from Perl to Python <paul.hermeneutic@gmail.com> - 2016-02-02 10:00 -0700
  Re: psss...I want to move from Perl to Python "Martin A. Brown" <martin@linux-ip.net> - 2016-02-02 13:04 -0800
  Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-02-02 19:36 -0500

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