On Tuesday 27 October 2009 06:25:13 am John wrote: > I use a 'SuperDict' all the time in my code. Not sure it's a good idea, but > I find it convenient. Also, I wouldn't mind comments on why/why not to use > something like this: > > class SuperDict(dict): > def __getattr__(self, attr): > return self[attr] > def __setattr__(self, attr, value): > self[attr] = value > > def set_with_dict(self,D): > """ set attributes with a dict """ > for k in D.keys(): > self.__setattr__(k,D[k]) > > Here's the original thread (NOTE: I have also been trying to use more > structured arrays as recommended by one poster): > http://www.nabble.com/creating-a-dict-like-class---asigning-variables...-th >is-one-may-take-some-thought--%29-td23759398.html > > On Tue, Oct 27, 2009 at 1:45 PM, Christian Witts <cwi...@compuscan.co.za>wrote: > > Modulok wrote: > >> List, > >> > >> I'm new to the list, (somewhat new to python too). My code feels > >> hacky. I'd like to know if there is a more eloquent way (more below). > >> If not, a general thumbs up from more experienced programmers would be > >> great! > >> > >> Assume I have a dict, 'foo'. I also have my own class, 'Bar', which > >> subclasses (i.e. is a derived class) of a dict. How do I eloquently > >> get foo into an instace of Bar? Example: > >> > >> > >> ### BEGIN CODE: > >> class Bar(dict): > >> pass # Act like a dict for now. > >> > >> foo = {'a': 100, 'b': 200, 'c': 300} # This could be a function return > >> value. > >> myvar = Bar() > >> # The hacky feeling part: > >> for k,v in foo.items(): myvar[k] = v > >> > >> ### END CODE > >> > >> Obviously I can put the dict into an instance variable, but then > >> methods like 'keys()' and such won't work. If that makes any sense... > >> > >> Thanks guys! > >> -Modulok- > >> _______________________________________________ > >> Tutor maillist - Tutor@python.org > >> To unsubscribe or change subscription options: > >> http://mail.python.org/mailman/listinfo/tutor > > > > You can use the built-in function for dictionaries called update. So > > > > >>> class Bar(dict): > > >>> pass > > >>> > > >>> > > >>> foo = {'a':100, 'b':200, 'c': 300} > > >>> myvar = Bar() > > >>> myvar.update(foo) > > >>> myvar > > > > {'a': 100, 'c': 300, 'b': 200} > > > > -- > > Kind Regards, > > Christian Witts
Hey guru's could one of you explain why such a subclass is needed. How would it be used. I'm not sure but does not the deepcopy() work as above? Thanks Johnf _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
