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Re: Why no warnings when re-assigning builtin names?

References (2 earlier) <4e49c89a$0$30001$c3e8da3$5496439d@news.astraweb.com> <mailman.34.1313464992.27778.python-list@python.org> <4e49fcd7$0$29974$c3e8da3$5496439d@news.astraweb.com> <slrnj4l8ng.1pqc.usenet-nospam@guild.seebs.net> <4e4b1242$0$29966$c3e8da3$5496439d@news.astraweb.com>
Date 2011-08-17 08:34 +0100
Subject Re: Why no warnings when re-assigning builtin names?
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.120.1313566464.27778.python-list@python.org> (permalink)

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On Wed, Aug 17, 2011 at 1:58 AM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
>> My thoughts would be:
>> 1.  It's hard to avoid shadowing anything unless you know the entire
>> language and never forget things.
>
> Define the "entire language". Does that include the names of all the
> plethora of exceptions? How about the standard library?

The shadowing issue applies to the standard library as well as the
builtins, so yes; to avoid shadowing *anything*, you would have to
know the entire language. I posit that this is a practical
impossibility, and that unexpected shadowing will always be possible
(and won't always be prevented by syntax highlighting). Some day
you'll discover that you can't use module X because you have a
function called X, and you'll have to rename.

ChrisA

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Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-15 23:15 +0100
  Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-16 11:32 +1000
    Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-15 23:23 -0400
      Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-16 15:15 +1000
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 10:13 -0400
          Re: Why no warnings when re-assigning builtin names? rantingrick <rantingrick@gmail.com> - 2011-08-16 08:44 -0700
            Re: Why no warnings when re-assigning builtin names? Andrew Berg <bahamutzero8825@gmail.com> - 2011-08-16 12:23 -0500
        Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-16 16:12 +0100
        Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-16 08:41 -0700
          Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-16 17:11 +0000
            Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-16 10:48 -0700
            Re: Why no warnings when re-assigning builtin names? Tim Chase <python.list@tim.thechases.com> - 2011-08-16 13:34 -0500
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 11:31 -0400
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 11:38 -0400
        Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-16 09:19 -0700
          Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-16 17:11 +0000
            Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-16 10:43 -0700
              Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-16 18:56 +0000
                Re: Why no warnings when re-assigning builtin names? Terry Reedy <tjreedy@udel.edu> - 2011-08-16 19:32 -0400
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-16 23:49 +0000
                Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-17 01:02 +0100
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 01:35 +0000
                Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-17 08:27 +0100
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 16:33 +0000
                Re: Why no warnings when re-assigning builtin names? Terry Reedy <tjreedy@udel.edu> - 2011-08-16 22:10 -0400
            Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-16 19:23 +0100
        Re: Why no warnings when re-assigning builtin names? Tim Chase <python.list@tim.thechases.com> - 2011-08-16 11:10 -0500
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 12:32 -0400
          Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-17 11:29 +1000
            Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 22:16 -0400
        Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-16 10:07 -0700
        Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-16 17:11 +0000
          Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-17 10:58 +1000
            Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 03:17 +0000
              Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-17 18:15 +1000
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 16:33 +0000
                Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-17 10:36 -0700
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 17:36 +0000
                Re: Why no warnings when re-assigning builtin names? Ethan Furman <ethan@stoneleaf.us> - 2011-08-17 11:13 -0700
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 18:09 +0000
                Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-17 18:42 +0100
                Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-17 17:38 +0000
                Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-17 19:02 +0100
                Re: Why no warnings when re-assigning builtin names? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-18 10:36 +1000
            Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-17 08:34 +0100
        RE: Why no warnings when re-assigning builtin names? "Gerrat Rickert" <grickert@coldstorage.com> - 2011-08-16 13:15 -0400
        Re: Why no warnings when re-assigning builtin names? Terry Reedy <tjreedy@udel.edu> - 2011-08-16 19:29 -0400
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 20:18 -0400
        Re: Why no warnings when re-assigning builtin names? Terry Reedy <tjreedy@udel.edu> - 2011-08-16 22:15 -0400
        Re: Why no warnings when re-assigning builtin names? Philip Semanchuk <philip@semanchuk.com> - 2011-08-16 22:51 -0400
        RE: Why no warnings when re-assigning builtin names? "Gerrat Rickert" <grickert@coldstorage.com> - 2011-08-17 09:30 -0400
    Re: Why no warnings when re-assigning builtin names? Chris Angelico <rosuav@gmail.com> - 2011-08-16 09:16 +0100
  Re: Why no warnings when re-assigning builtin names? Chris Torek <nospam@torek.net> - 2011-08-31 21:30 +0000
    Re: Why no warnings when re-assigning builtin names? Seebs <usenet-nospam@seebs.net> - 2011-08-31 21:57 +0000

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