Immutability

[Bruno Desthuilliers]

Georg Brandl a écrit :
> Nick Maclaren wrote:
> 
>>In article <mailman.7574.1151511089.27775.python-list at python.org>,
>>"Fredrik Lundh" <fredrik at pythonware.com> writes:
>>|> 
>>|> identical?  you only applied @property to one of the methods, and then you're
>>|> surprised that only one of the methods were turned into a property?
>>
>>I wasn't expecting EITHER to be turned INTO a property - I was expecting
>>both methods to be the same, but one would have non-default properties
>>attached to it.
> 
> 
> That's another sign that property isn't intended to be used as a decorator.
> Normally, decorators wrap functions with other functions.

Normally, decorators take a function and return anything appropriate.

> property doesn't
> return a function but a descriptor object.

FWIW, function *are* descriptors (well, Python functions at least, cf 
the recent thread about pyrex functions).

 >>> def fun(): pass
...
 >>> fun.__get__
<method-wrapper object at 0x4041e1ec>
 >>>