Re: confused about new

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From	Lie Ryan <lie.1296@gmail.com>
Subject	Re: confused about __new__
Date	Tue, 27 Dec 2011 18:47:22 +1100
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On 12/27/2011 04:48 PM, Fredrik Tolf wrote:
> On Mon, 26 Dec 2011, K. Richard Pixley wrote:
>> I don't understand. Can anyone explain?
>
> I'm also a bit confused about __new__. I'd very much appreciate it if
> someone could explain the following aspects of it:
>
> * The manual (<http://docs.python.org/reference/datamodel.html>) says
> that __new__ is "a static method (special-cased so you need not declare
> it as such)". What does "special-cased" mean? Apparently, for
> instance, in OP's case, Python did not automatically detect that it
> should not be bound as a method.

If you declare new in the regular way:

class Foo(object):
     def __new__(cls):
         ...

Python would create __new__ as a static method even without applying the 
staticmethod decorator; that python does not detect to special case 
__new__ when it is added dynamically is probably an oversight in Python 
2.x that was fixed in Python 3.x.

Thread

confused about __new__ "K. Richard Pixley" <rich@noir.com> - 2011-12-26 20:28 -0800
  Re: confused about __new__ Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-27 04:53 +0000
    Re: confused about __new__ K Richard Pixley <rich@noir.com> - 2011-12-26 21:27 -0800
  Re: confused about __new__ Fredrik Tolf <fredrik@dolda2000.com> - 2011-12-27 06:48 +0100
    Re: confused about __new__ K Richard Pixley <rich@noir.com> - 2011-12-27 09:41 -0800
      Re: confused about __new__ Ian Kelly <ian.g.kelly@gmail.com> - 2011-12-27 11:28 -0700
      Re: confused about __new__ Ian Kelly <ian.g.kelly@gmail.com> - 2011-12-27 13:34 -0700
        Re: confused about __new__ K Richard Pixley <rich@noir.com> - 2011-12-27 14:19 -0800
          Re: confused about __new__ Ian Kelly <ian.g.kelly@gmail.com> - 2011-12-27 15:43 -0700
      Re: confused about __new__ K Richard Pixley <rich@noir.com> - 2011-12-27 12:31 -0800
  Re: confused about __new__ Ian Kelly <ian.g.kelly@gmail.com> - 2011-12-27 00:28 -0700
  Re: confused about __new__ Lie Ryan <lie.1296@gmail.com> - 2011-12-27 18:47 +1100
  Re: confused about __new__ Fredrik Tolf <fredrik@dolda2000.com> - 2011-12-27 19:05 +0100

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