Terry Carroll wrote: > An example is if you wanted to create a "birthdate" class, which was just > like a regular date, but also included the birthstone that corresponded to > the date. We could create a "birthdate" module that included a > "Birthdate" class: > > ############### > > import datetime > > class Birthdate(datetime.date): > > def __init__(self, year, month, day): > stones = ["Garnet", "Amethyst", "Aquamarine", > "Diamond", "Emerald", "Perl", > "Ruby", "Python", "Sapphire", > "Opal", "Topaz", "Turquoise"] > self.birthstone = stones[month-1]
I think you are missing the line datetime.date.__init__(self, year, month, day) somewhere in here. I am very surprised that this works, my understanding was that datetime.date was immutable and required overriding __new__() rather than __init__(). But it does work... Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
