Hi Mr. Terra, Thanks so much for these links and your help. Definitely appreciated. I know I'll just end up using the ModelSerializer class but I like to understand what is going on underneath to a reasonable level and it bugs me when I can't figure something that I know is basic out.
On Thursday, March 14, 2013 5:23:53 PM UTC-4, Andre Terra (airstrike) wrote: > > This is a much better explanation on the use of *args and **keywordargs > (**kwargs) > > > http://www.saltycrane.com/blog/2008/01/how-to-use-args-and-kwargs-in-python/ > > On Thu, Mar 14, 2013 at 6:22 PM, Andre Terra <[email protected]<javascript:> > > wrote: > >> About the asterisks, please checkout this link: >> >> http://stackoverflow.com/questions/4306574/python-method-function-arguments-starting-with-asterisk-and-dual-asterisk >> >> the difference between dict['key'] and dict.get('key', 'something') is >> that the second doesn't raise a KeyError exception when 'key' isn't in the >> dict; instead, it returns 'something'. this allows for shorter code. please >> compare: >> >> try: >> max_retries = config['max_retries'] >> except KeyError: >> max_retries = 10 >> >> versus >> >> max_retries = config.get('max_retries', 10) >> >> >> >> Cheers, >> AT >> >> >> On Thu, Mar 14, 2013 at 6:17 PM, lamen <[email protected] >> <javascript:>>wrote: >> >>> Hello, >>> >>> Not sure what the difference is in the usage of attrs >>> I could not find the documentation for this although I'm sure it's going >>> to be obvious after the fact. >>> >>> Also, could someone tell me what the double asterisks mean in the line >>> return Comment(**attrs) >>> ? >>> >>> Is this some type of variable length parameter list? How would >>> >>> return Comment(*attrs) >>> >>> and >>> >>> return Comment(attrs) >>> vs >>> >>> be different? >>> >>> Thank you! >>> >>> class CommentSerializer(serializers.Serializer): >>> email = serializers.EmailField() >>> content = serializers.CharField(max_length=200) >>> created = serializers.DateTimeField() >>> >>> def restore_object(self, attrs, instance=None): >>> if instance is not None: >>> instance.title = attrs['title'] >>> instance.content = attrs['content'] >>> instance.created = attrs['created'] >>> return instance >>> return Comment(**attrs) >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Django users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> To post to this group, send email to [email protected]<javascript:> >>> . >>> Visit this group at http://groups.google.com/group/django-users?hl=en. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/django-users?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
