On 2 Dec., 11:30, Nick Craig-Wood <[EMAIL PROTECTED]> wrote: > > For 4 attributes I'd probably go with the __getattr__. > OK, I'll do that!
> Or you could easily write your own decorator to cache the result... > > Eghttp://code.activestate.com/recipes/363602/ Cool. I never realized I could write my own decorators! I've so far only used them for @classmethod, @staticmethod and stuff like that. User defined decorators are nice and fun to do as well. I just hope it will be understandable in four years also... > > > With the property methology you do the value check on each get, which > > does not look as "clean". The property methology is also a little less > > arcane I guess for less experienced Python programmers to understand > > when re-reading the code. > > Less magic is how I would put it. Magic is fun to write, but a pain > to come back to. Over the years I find I try to avoid magic more and > more in python. > Ah, I see. I hope you do not consider user defined decorators "magic" then? ;-) > > What kind of trouble are you referring to in __getattr__? Is it > > recursive calls to the method on accessing object attributes in that > > method itself or other complications? > > Every time I write a __getattr__ I get tripped up by infinite > recursion! It is probably just me ;-) > And I will probably end up having the same initial problems, but I found an example here, which I may try to be inspired from. http://western-skies.blogspot.com/2008/02/complete-example-of-getattr-in-python.html > > On a related issue, thank you for showing me how to use @property as a > > decorator - I was not aware of that possibility, just gotta understand > > how to decorate a setter and delete method as well, but I should be > > able to look that up by myself... > > I'm sure you will! > > http://www.python.org/doc/2.5.2/lib/built-in-funcs.html > Yeah, I just visited that page yesterday! Again, thank you for your assistance, Nick! -- Slaunger -- http://mail.python.org/mailman/listinfo/python-list
