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Re: Why has python3 been created as a seperate language where there is still python2.7 ?

From Terry Reedy <tjreedy@udel.edu>
Subject Re: Why has python3 been created as a seperate language where there is still python2.7 ?
Date 2012-06-26 00:33 -0400
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Newsgroups comp.lang.python
Message-ID <mailman.1505.1340685246.4697.python-list@python.org> (permalink)

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On 6/25/2012 11:35 PM, Steven D'Aprano wrote:
> (Rick, don't make me regret communicating with you again.)
>
> On Mon, 25 Jun 2012 19:28:01 -0700, rantingrickjohnson wrote:
>
>> However, there is something to be said for "old habits die hard". I
>> myself lament every time i must type->(, then blah, then->) AGAIN!. My
>> fingers are hardwired for the old print statement. Damned that Guido and
>> his mind games!
>
> There's no real difference between typing print(...) and all the other
> functions in Python.

Yes there is ... as Rick said, habit. I still sometimes forget ;-(

 > Do you lament having to type len(obj) instead of
> "len obj" or list(zip(a, b, c)) instead of "list zip a b c"?

No.

> Making print a statement in the first place was a mistake, but
> fortunately it was a simple enough mistake to rectify once the need for
> backward compatibility was relaxed.

Complete agreed. I have used all of sep=, end=, and file= at various times.

-- 
Terry Jan Reedy

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Re: Why has python3 been created as a seperate language where there is still python2.7 ? Michiel Overtoom <motoom@xs4all.nl> - 2012-06-25 12:10 +0200
  Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-25 19:28 -0700
    Re: Why has python3 been created as a seperate language where there is still python2.7 ? Jeremiah Dodds <jeremiah.dodds@gmail.com> - 2012-06-26 01:04 -0400
    Re: Why has python3 been created as a seperate language where there is still python2.7 ? Stefan Behnel <stefan_ml@behnel.de> - 2012-06-26 08:24 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-27 20:32 -0700
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-27 20:32 -0700
  Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-25 19:28 -0700
    Re: Why has python3 been created as a seperate language where there is still python2.7 ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-06-26 03:35 +0000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Terry Reedy <tjreedy@udel.edu> - 2012-06-26 00:33 -0400
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-06-26 02:15 -0400
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-06-26 07:40 +0000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Stefan Behnel <stefan_ml@behnel.de> - 2012-06-26 08:34 +0200
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-27 20:53 -0700
          Re: Why has python3 been created as a seperate language where there is still python2.7 ? alex23 <wuwei23@gmail.com> - 2012-06-27 21:05 -0700
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-27 20:53 -0700
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Christian Tismer <tismer@stackless.com> - 2012-06-27 12:25 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Chris Angelico <rosuav@gmail.com> - 2012-06-27 21:02 +1000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Stefan Behnel <stefan_ml@behnel.de> - 2012-06-27 13:22 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-06-27 07:24 -0400
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Chris Angelico <rosuav@gmail.com> - 2012-06-27 22:05 +1000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Christian Tismer <tismer@stackless.com> - 2012-06-27 15:15 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Stefan Behnel <stefan_ml@behnel.de> - 2012-06-27 15:44 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Chris Angelico <rosuav@gmail.com> - 2012-06-27 23:44 +1000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Christian Tismer <tismer@stackless.com> - 2012-06-27 16:34 +0200
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Serhiy Storchaka <storchaka@gmail.com> - 2012-06-27 21:58 +0300
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Serhiy Storchaka <storchaka@gmail.com> - 2012-06-27 22:08 +0300
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Terry Reedy <tjreedy@udel.edu> - 2012-06-27 17:14 -0400
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Christian Tismer <tismer@stackless.com> - 2012-06-28 00:11 +0200
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? alex23 <wuwei23@gmail.com> - 2012-06-27 17:44 -0700
          Re: Why has python3 been created as a seperate language where there is still python2.7 ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-06-28 04:32 +0000
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? rantingrickjohnson@gmail.com - 2012-06-27 20:25 -0700
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Serhiy Storchaka <storchaka@gmail.com> - 2012-06-28 08:36 +0300
      Re: Why has python3 been created as a seperate language where there is still python2.7 ? Stefan Behnel <stefan_ml@behnel.de> - 2012-06-28 07:47 +0200
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? wxjmfauth@gmail.com - 2012-06-28 02:34 -0700
        Re: Why has python3 been created as a seperate language where there is still python2.7 ? wxjmfauth@gmail.com - 2012-06-28 02:34 -0700
          Re: Why has python3 been created as a seperate language where there is still python2.7 ? Chris Angelico <rosuav@gmail.com> - 2012-06-28 20:14 +1000
    Re: Why has python3 been created as a seperate language where there is still python2.7 ? Roy Smith <roy@panix.com> - 2012-06-27 07:45 -0400

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