> Your comment about "computed" makes it more clear what that's all about. > Also Bertrand Meyer (Eiffel language creator) had idea like that, he > called it "referential transparency". But I think when Python has this > nice property mechanism, why do people change direct data attributes into > properties and not the other way around or not at all, I mean using only > properties for logical > data attributes -- e.g. assuring correctness first via read-only > property?
I fail to see where read-only-ness of an attribute is a priori more correct than having modifyable attributes. Again, it's an assumption of a future use or constraint that is most of the times simply not correct or relevant - at the price for more typing, and computational overhead. Diez -- http://mail.python.org/mailman/listinfo/python-list
