Class: @property -> .__dict__

[Thomas Rachel]

Am 16.12.2011 09:52 schrieb Ulrich:

> Could anyone please explain me why this does not work / how to get b
> into .__dict__ / hint me to an explanation?

b is not a data element of the particular instance, but it lives in the 
class. It is, roughly spoken, a "kind of method", just to be used 
without calling. These things are called "data descriptors" 
(http://docs.python.org/reference/datamodel.html#descriptors).

t.b is internally reflected to te.__dict__['b'].__get__(t, te) in order 
to call the __get__ method of the property object. This is done on every 
call and the value is, in your case, derived from the instance value a.

HTH,

Thomas