> > > > Kay Schluehr wrote:
> > > > Python 2.6 and 3.0 have a more Pythonic way for the problem:
> > > > class A(object):
> > > > @property
> > > > def foo(self):
> > > > return self._foo
> > > > @foo.setter
> > > > def foo(self, value)
> > > > self._foo = value
> > > > @foo.deletter
> > > > def foo(self)
> > > > del self._foo
> > > > class B(A):
> > > > # one can even overwrite the getter in a subclass
> > > > @foo.getter
> > > > def foo(self):
> > > > return self._foo * 2
> > > > Christian
On Dec 12, 2007 12:57 PM, George Sakkis <[EMAIL PROTECTED]> wrote:
> 1. The property name ('foo') is repeated *5* times for a single class.
> Talk about DRY.
> 2. Total inconsistency: @property for the getter when it is defined
> for the first time, @foo.setter/@foo.deletter for the setter/deletter,
> @foo.getter when the getter is redefined. WTF ?!
Eww, I agree with George here, with respect to these two points. When
I looked at this my first wtf was the @property and then @foo.getter
business. I really don't mind the current way of doing things: attr =
property(get,set). Other mechanisms can be created with getattr
routines. I don't really like this new syntax at all. Too many @
marks, inconsistancies, and too many foos everywhere. Not to mention
how long it reads. For only getters, it's not bad though, and a
little better than property().
Decorators really don't feel pythonic to me at all, mostly due to the
@ symbol, but it looks really awful in this instance.
What about this, somewhat similar but not ugly syntax:
class A:
foo = property()
def foo.get():
return self._foo
def foo.delete():
del self._foo
def foo.set(val):
self._foo = val
Defining something with a dot is currently a syntax error. Ok, so
it's still too many foos. At least it's consistent. I'm not really
proposing this btw. I'd rather not introduce more specialized syntax.
How about abusing with:
class A:
with property("foo"):
def get
def set...
There's your thunk, and I really like with, but am saddened that it
has such limited use at the moment. Of course this isn't really what
with is for...
Can anyone tell me what's wrong about the current property() syntax,
besides namespace polution?
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