> On 6/10/07, Steven Bethard <[EMAIL PROTECTED]> wrote: > > On 6/9/07, Eyal Lotem <[EMAIL PROTECTED]> wrote: > > > I believe that this should be changed, so that Python first looks for > > > the attribute in the instance's dict and only then through the dict's > > > mro. > > > > Are you suggesting that the following code should print "43" instead of > > "42"? > > :: > > > > >>> class C(object): > > ... x = property(lambda self: self._x) > > ... def __init__(self): > > ... self._x = 42 > > ... > > >>> c = C() > > >>> c.__dict__['x'] = 43 > > >>> c.x > > 42
On 6/9/07, Eyal Lotem <[EMAIL PROTECTED]> wrote: > Yes, I do suggest that. > But its important to notice that this is not a suggestion in order to > improve Python, but one that makes it possible to get reasonable > performance out of CPython. As such, I don't believe it should be done > in Py3K. > > Firstly, like everything that breaks backwards compatibility, it is > possible to have a transitional version that spits warnings for all > problems (detect name clashes between properties and instance dict). Sure, but then you're talking about really introducing this in Python 2.7, with 2.6 as a transitional version. So take a minute to look at the release timelines: http://www.python.org/dev/peps/pep-0361/ The initial 2.6 target is for April 2008. http://www.python.org/dev/peps/pep-3000/ I hope to have a first alpha release (3.0a1) out in the first half of 2007; it should take no more than a year from then before the first proper release, named Python 3.0 So I'm expecting Python 3.0 to come out *before* 2.7. Thus if you're proposing a backwards-incompatible change that would have to wait until 2.7 anyway, why not propose it for 3.0 where backwards-incompatible changes are more acceptable? STeVe -- I'm not *in*-sane. Indeed, I am so far *out* of sane that you appear a tiny blip on the distant coast of sanity. --- Bucky Katt, Get Fuzzy _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
