Then it makes sense to check for number of arguments (len(args) == len(obj._meta.fields)) and raise an error if it's not equal to number of fields. The *args instantiation is useful and fast. QSRF improvements may make it less useful nut **kwargs instantiation just always be slower due to the nature of Python.
import this ... Although practicality beats purity. ... On 30 янв, 02:57, "Jacob Kaplan-Moss" <[EMAIL PROTECTED]> wrote: > On 1/29/08, Ivan Illarionov <[EMAIL PROTECTED]> wrote: > > > Jacob, why are you opposed to alternative instantiation methods? > > >>> import this > ... > There should be one-- and preferably only one --obvious way to do it. > ... > > On top of that, as I keep saying, it leads to brittle code -- I've > been bitten a number of times. > > For example, say you've got this model:: > > class Person(models.Model): > first = models.CharField() > last = models.CharField(blank=True) > > And somewhere -- maybe in a data import script -- you've got:: > > p = Person(None, first, last) > > Now you decide you need to change you model a bit:: > > class Person(models.Model): > first = models.CharField() > middle = models.CharField() > last = models.CharField(blank=True) > > Then you run the data import script and get a bunch of people with > last names stored under ``person.middle``. > > Relying on the order of fields in the model definition is asking for a > heaping load of fail. Hence my desire to see it go away. > > Jacob --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-developers@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-developers?hl=en -~----------~----~----~----~------~----~------~--~---
