Re: Language design

Newsgroups	comp.lang.python
Date	2015-06-02 11:08 -0700
References	<522eb795$0$29999$c3e8da3$5496439d@news.astraweb.com> <mailman.270.1378935062.5461.python-list@python.org> <5230ff66$0$29988$c3e8da3$5496439d@news.astraweb.com> <a703cea2-ef76-4a47-81ba-3ddcbfcd2c06@googlegroups.com> <556d5a6d$0$11122$c3e8da3@news.astraweb.com>
Message-ID	<a0e03694-d03e-4062-971c-46d5567b5f92@googlegroups.com> (permalink)
Subject	Re: Language design
From	"Dr. Bigcock" <dreamingforward@gmail.com>

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On Tuesday, June 2, 2015 at 2:25:43 AM UTC-5, Steven D'Aprano wrote:
> On Tuesday 02 June 2015 07:45, TheDoctor wrote:
> 
> > On Wednesday, September 11, 2013 at 6:40:22 PM UTC-5, Steven D'Aprano
> > wrote:
> >> On Wed, 11 Sep 2013 14:30:54 -0700, Mark Janssen wrote:
> >> 
> >> > 1) It tried to make Object the parent of every class.
> >> 
> >> Tried, and succeeded.
> > 
> > Oh?  How about:
> > 
> > class superdict(dict):
> >     """I'm going to extend the dict type to include extra methods."""
> > 
> > class mixin():
> >    """Here we go."""
> > 
> > What is the parent of mixin?
> 
> Why don't you try for yourself and see?

> py> class mixin():
> ...     """Here we go."""
> ... 
> py> mixin.__bases__
> (<class 'object'>,)
> py> mixin.__base__
> <class 'object'>
> py> mixin.__mro__
> (<class '__main__.mixin'>, <class 'object'>)
> 

Python2.7:

>>> type(mixin)
<type 'classobj'>

It's a special classobj in v2.7 which doesn't have any attributes like __base__ or __mro__.

And yes, I'm bringing up old conversations, because don't you agree that it's better to return to old conversations than to re-create them all over again?

--m

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Re: Language design TheDoctor <dreamingforward@gmail.com> - 2015-06-01 14:45 -0700
  Re: Language design Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-02 17:25 +1000
    Re: Language design "Dr. Bigcock" <dreamingforward@gmail.com> - 2015-06-02 11:08 -0700

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