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Groups > comp.lang.python > #70905
| From | Gregory Ewing <greg.ewing@canterbury.ac.nz> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Why has __new__ been implemented as a static method? |
| Date | 2014-05-04 11:21 +1200 |
| Message-ID | <bslc0jFf9idU1@mid.individual.net> (permalink) |
| References | <mailman.9665.1399113463.18130.python-list@python.org> <53650751$0$29965$c3e8da3$5496439d@news.astraweb.com> |
Steven D'Aprano wrote:
> I'm not entirely sure what he means by "upcalls", but I believe it means
> to call the method further up (that is, closer to the base) of the
> inheritance tree.
I think it means this:
def __new__(cls):
MyBaseClass.__new__(cls)
which wouldn't work with a class method, because
MyBaseClass.__new__ would give a *bound* method
rather than an unbound one.
Python 3's version of super() seems to work with
class methods, but Python 2's doesn't (or at least
I couldn't get it to work in a brief test). Also,
I don't think super() existed at all when __new__
was invented.
--
Greg
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Why has __new__ been implemented as a static method? Jurko Gospodnetić <jurko.gospodnetic@pke.hr> - 2014-05-03 12:37 +0200
Re: Why has __new__ been implemented as a static method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-03 15:12 +0000
Re: Why has __new__ been implemented as a static method? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-05-04 11:21 +1200
Re: Why has __new__ been implemented as a static method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-04 03:37 +0000
Re: Why has __new__ been implemented as a static method? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-05-04 20:03 +1200
Re: Why has __new__ been implemented as a static method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-04 14:16 +0000
Re: Why has __new__ been implemented as a static method? Rotwang <sg552@hotmail.co.uk> - 2014-05-04 17:24 +0100
Re: Why has __new__ been implemented as a static method? Ian Kelly <ian.g.kelly@gmail.com> - 2014-05-04 11:05 -0600
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