On 6/16/10 9:34 AM, Steven D'Aprano wrote:
> On Wed, 16 Jun 2010 09:17:47 -0700, Stephen Hansen wrote:
>
>> Leading-and-trailing double underscores are explicitly reserved for
>> Python to define as Special.
>
>
> That part is correct. But of course Python doesn't prevent you from
> ignoring t
On Wed, 16 Jun 2010 09:17:47 -0700, Stephen Hansen wrote:
> Leading-and-trailing double underscores are explicitly reserved for
> Python to define as Special.
That part is correct. But of course Python doesn't prevent you from
ignoring this rule (more of a guideline really).
> They also imp
On 6/16/10 6:10 AM, Peter Otten wrote:
> Thomas Lehmann wrote:
>
>>> class AutoValueDict(dict):
>>> def __makeitem__(self, key):
>>> return self.setdefault(key, {})
>
> I think it's bad style to invent your own __whatever__() methods, I'd rather
> call them _whatever().
It goes a bi
On Wed, Jun 16, 2010 at 4:43 AM, Thomas Lehmann wrote:
> Hi,
>
> I have seen a recipe which allows auto creation of missing values for
> dictionaries.
> However this recipe is not working for all.
>
> class AutoValueDict(dict):
> def __makeitem__(self, key):
> return self.setdefault(key,
Thomas Lehmann wrote:
>> class AutoValueDict(dict):
>> def __makeitem__(self, key):
>> return self.setdefault(key, {})
I think it's bad style to invent your own __whatever__() methods, I'd rather
call them _whatever().
>> def __getitem__(self, key):
>> return self.get(ke
>
> class AutoValueDict(dict):
> def __makeitem__(self, key):
> return self.setdefault(key, {})
>
> def __getitem__(self, key):
> return self.get(key, self.__makeitem__(key))
>
> I would like to have a dictionary which ensures dictionaries as values
> except when I'm assigni
