Re: Multiple inheritance, super() and changing signature

From	Ian Kelly <ian.g.kelly@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: Multiple inheritance, super() and changing signature
Date	2016-06-02 11:55 -0600
Message-ID	<mailman.101.1464890159.1839.python-list@python.org> (permalink)
References	(1 earlier) <85h9de6lp4.fsf@benfinney.id.au> <mailman.58.1464724917.1839.python-list@python.org> <52defc17-a6e6-4f7e-a91d-4e1e3b263b55@googlegroups.com> <57506e90$0$1602$c3e8da3$5496439d@news.astraweb.com> <CALwzidn65R5jaFLmiEdvLJXgij+0GiVXA5oAMM6UnyeneRz8hQ@mail.gmail.com>

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On Thu, Jun 2, 2016 at 11:36 AM, Steven D'Aprano <steve@pearwood.info> wrote:
> On Thu, 2 Jun 2016 06:22 pm, Lawrence D’Oliveiro wrote:
>
>> On Wednesday, June 1, 2016 at 8:02:14 AM UTC+12, Ben Finney wrote:
>>> (Note that ‘__init__’ is not a constructor, because it operates on the
>>> *already constructed* instance, and does not return anything.
>>
>> Believe it or not, that *is* what “constructor” means in every OO
>> language.
>
> I don't believe it.
>
> C# is an OO language, and it distinguishes constructors and initialisers:
>
> https://msdn.microsoft.com/en-us/library/bb397680.aspx
>
> (although they don't seem to mean quite the same as what they mean in
> Python).

Indeed. The "constructor" in that example is the equivalent of the
Python __init__ method. The "initializer" is not a part of the class
at all but just a syntactic sugar for creating an instance and setting
some of its properties at the same time in a single statement. It's
very similar to the C array initializer syntax, e.g.:

    int myArray[] = {1, 2, 3, 4, 5};

Thread

Re: Multiple inheritance, super() and changing signature Ben Finney <ben+python@benfinney.id.au> - 2016-06-01 06:01 +1000
  Re: Multiple inheritance, super() and changing signature Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-02 01:22 -0700
    Re: Multiple inheritance, super() and changing signature Michael Selik <michael.selik@gmail.com> - 2016-06-02 14:44 +0000
    Re: Multiple inheritance, super() and changing signature Steven D'Aprano <steve@pearwood.info> - 2016-06-03 03:36 +1000
      Re: Multiple inheritance, super() and changing signature Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-02 11:55 -0600
      Re: Multiple inheritance, super() and changing signature Random832 <random832@fastmail.com> - 2016-06-02 17:18 -0400
        Re: Multiple inheritance, super() and changing signature Marko Rauhamaa <marko@pacujo.net> - 2016-06-03 01:20 +0300
        Re: Multiple inheritance, super() and changing signature Steven D'Aprano <steve@pearwood.info> - 2016-06-03 22:47 +1000

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