Re: Classes - converting external function to class's method.

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!weretis.net!feeder1.news.weretis.net!news.solani.org!.POSTED!not-for-mail
From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups	comp.lang.python
Subject	Re: Classes - converting external function to class's method.
Date	Mon, 15 Dec 2014 01:32:52 +0100
Organization	solani.org
Lines	42
Message-ID	<3517223.7xnpL0NDtR@PointedEars.de> (permalink)
References	<mailman.16949.1418574125.18130.python-list@python.org> <2082416.uXDKvNnAXg@PointedEars.de> <mailman.16964.1418602282.18130.python-list@python.org>
Reply-To	usenet@PointedEars.de
Mime-Version	1.0
Content-Type	text/plain; charset="UTF-8"
Content-Transfer-Encoding	8Bit
X-Trace	solani.org 1418603573 10850 eJwNysEBwCAIA8CVNEAo42gq+4+g77swTiqdQY+Orpb1knQ64FHVHPAB7HdwcutHTa40//joAifZEKg= (15 Dec 2014 00:32:53 GMT)
X-Complaints-To	abuse@news.solani.org
NNTP-Posting-Date	Mon, 15 Dec 2014 00:32:53 +0000 (UTC)
User-Agent	KNode/4.14.2
X-User-ID	eJwFwYEBwCAIA7CXptCi5wCV/09YAuNihxN0DGYkepuOEtvl+JJ4K3ZFpirtfn0Pnz3p3LSYUEHqig1U/3XKFrc=
Cancel-Lock	sha1:oatRQ3RlVR27Zvlo+h1zacc2F2I=
X-NNTP-Posting-Host	eJwFwQkBwCAMA0BL/ZIwOVBW/xK4Q9LZKoKFwRiUoV7yz7SxbtGPdUYJed0TYIys/p7axx7wJw/V
Xref	csiph.com comp.lang.python:82537

Show key headers only | View raw

Terry Reedy wrote:

> On 12/14/2014 6:15 PM, Thomas 'PointedEars' Lahn wrote:
>> Ivan Evstegneev wrote:
>>> I have stuck a bit with this example(took this one from the book).
>>>
>>> Here are a description steps of what I've done till now:
>>>
>>> Step 1 - creating an empty namespace:
>>>
>>>>>> class rec: pass
>>
>> IMHO that is not actually creating a namespace; it is just
>> declaring/defining an empty class.
> 
> I pythonland, a namespace is a many to one mapping between names and
> objects.  They are usually but not necessarily implemented with dicts.
> […]
> 
>> BTW, the recommended Python 3.x way is
>>
>> class Rec (object):
>>      pass
> 
> I hope you meant Python *2*.x,

I did not.

> where '(object)' *is* needed to make a newstyle class.  In 3.x, '(object)' 
> is optional and normally omitted except in code meant to run unchanged in 
> 2 and 3.

Your statements are corroborated by the Language Reference:

<https://docs.python.org/3/tutorial/classes.html#python-scopes-and-namespaces>

<https://docs.python.org/2.7/reference/datamodel.html#new-style-and-classic-classes>

Thanks.

-- 
PointedEars

Thread

Classes - converting external function to class's method. "Ivan Evstegneev" <webmailgroups@gmail.com> - 2014-12-14 18:20 +0200
  Re: Classes - converting external function to class's method. Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-12-15 04:28 +1100
    RE: Classes - converting external function to class's method. "Ivan Evstegneev" <webmailgroups@gmail.com> - 2014-12-14 21:49 +0200
  Re: Classes - converting external function to class's method. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-12-15 00:15 +0100
    Re: Classes - converting external function to class's method. Terry Reedy <tjreedy@udel.edu> - 2014-12-14 19:11 -0500
      Re: Classes - converting external function to class's method. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-12-15 01:32 +0100
    Re: Classes - converting external function to class's method. Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-12-15 13:01 +1100
      RE: Classes - converting external function to class's method. "Ivan Evstegneev" <webmailgroups@gmail.com> - 2014-12-15 21:13 +0200

csiph-web