Re: None in string => TypeError?

References	(2 earlier) <03B8D21C-62B4-4344-AA25-FF82501C33D0@panix.com> <CAPTjJmqt+2doOdr-UJTMsDu1f1ZnKD+WEp5SY_LGekR3-FsuOg@mail.gmail.com> <CALwzidkRYToie4f385AwyDq0mG2TEqSz0J8si=R0H0ZMFs4vMg@mail.gmail.com> <CAPTjJmqidANye+3QoyHEr14-04nLXU-dLss0Y7X5eW6OJtChmA@mail.gmail.com> <CALwzidmKkF41vFczq9V+KCgceF6++A06YdvGx4LvtbNYcxNugg@mail.gmail.com>
Date	2014-06-10 04:02 +1000
Subject	Re: None in string => TypeError?
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.10933.1402336975.18130.python-list@python.org> (permalink)

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On Tue, Jun 10, 2014 at 3:58 AM, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> On Mon, Jun 9, 2014 at 11:40 AM, Chris Angelico <rosuav@gmail.com> wrote:
>> Also, this is the first time I've seen None as a constant other than
>> the first. Usually co_consts[0] is None, but this time co_consts[4] is
>> None.
>
> Functions always seem to have None as the first constant, but modules
> and classes are other examples that don't.
>
>>>> co = compile("class MyClass: pass", '', 'exec')
>>>> co.co_consts
> (<code object MyClass at 0x7f32aa0a3c00, file "", line 1>, 'MyClass', None)
>>>> co.co_consts[0].co_consts
> ('MyClass', None)

Huh. Learn something every day!

ChrisA

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None in string => TypeError? Roy Smith <roy@panix.com> - 2014-06-09 08:34 -0700
  Re: None in string => TypeError? Ryan Hiebert <ryan@ryanhiebert.com> - 2014-06-09 10:42 -0500
  Re: None in string => TypeError? Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-09 09:50 -0600
  Re: None in string => TypeError? Paul Sokolovsky <pmiscml@gmail.com> - 2014-06-09 18:57 +0300
    Re: None in string => TypeError? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-06-09 16:14 +0000
      Re: None in string => TypeError? Chris Angelico <rosuav@gmail.com> - 2014-06-10 02:31 +1000
  Re: None in string => TypeError? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-06-09 16:07 +0000
  Re: None in string => TypeError? MRAB <python@mrabarnett.plus.com> - 2014-06-09 17:06 +0100
  Re: None in string => TypeError? Shiyao Ma <i@introo.me> - 2014-06-10 00:13 +0800
  Re: None in string => TypeError? Roy Smith <roy@panix.com> - 2014-06-09 12:53 -0400
  Re: None in string => TypeError? Chris Angelico <rosuav@gmail.com> - 2014-06-10 02:59 +1000
  Re: None in string => TypeError? Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-09 11:22 -0600
  Re: None in string => TypeError? Chris Angelico <rosuav@gmail.com> - 2014-06-10 03:40 +1000
  Re: None in string => TypeError? Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-09 11:58 -0600
  Re: None in string => TypeError? Chris Angelico <rosuav@gmail.com> - 2014-06-10 04:02 +1000

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