Martin Drautzburg a écrit : > Daniel Nogradi wrote: > > > >>>>What if I want to create a datastructure that can be used in dot >>>>notation without having to create a class, i.e. because those >>>>objects have no behavior at all? >>> >>>A class inheriting from dict and implementing __getattr__ and >>>__setattr__ should do the trick... >> >> >>It can do the trick but one has to be careful with attributes that are >>used by dict such as update, keys, pop, etc. Actually it's noted in a >>comment at >>http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/361668 why the >>whole idea (attribute access of dictionaries) is a bad idea and I tend >>to agree. > > > Oh thank you. So all I have to do is have my object's class implement > __setattr__ and __getattr__, or derive it from a class that does so? > And I could save my "attributes" anywhere within my instance variables. > So I could even add a dictionary whose name does not conflict with what > python uses and whose key/value pairs hold the attributes I want to > access with dot notation and delegate all the python attributes to > their native positions? Oh I see, thats tricky. I still need to be > aware of the builtin stuff one way or the other.
Yeps. FWIW, Daniel is right to raise a warning here, and I should have think one more minute before posting - since in fact in this case you don't care about dict-like behaviour. > Interesting. -- http://mail.python.org/mailman/listinfo/python-list
