[Python-ideas] C# style properties

[Georg Brandl]

Josiah Carlson schrieb:
> Christian Heimes <lists at cheimes.de> wrote:
>> 
>> Hello!
>> 
>> In the past few months I've been toying around with .NET, C# and
>> PythonNet. While I still think that C# is too wory (public static
>> explicit operator Egg(Spam spam) { ... }) C# has one syntax feature I
>> really like to see in Python.
>> 
>> private float _a
>> public float a
>> {
>>     get { return _a; }
>>     set { _a = value; }
>> }
> [snip]
>> Comments?
> 
> Python has an exact equivalent to the C# method (which uses a new
> block/scope for defining properties...)
> 
>     class foo:
>         class a(Property):
>             ''' documentation '''
>             def get(self):
>                 return self._a
>             def set(self, val):
>                 self._a = val
>             def de1(self):
>                 del self._a
> 
> 
> Now all you need is a Property base class with a proper metaclass that
> handles all of the magic for you.  I'm curious as to why this still gets
> brought up when the obvious syntax is more or less identical to
> basically all reasonable alternate syntaxes.  Is it because people don't
> understand that metaclasses can mangle your class any way they want?

No, it's because they feel that the word "class" to introduce a property
is ugly, and I can't blame them for it.

Georg