Using inner dict as class interface
d at davea.name
Wed Jan 16 16:05:26 CET 2013
On 01/16/2013 09:42 AM, Florian Lindner wrote:
> I have a:
> class C:
> def __init__(self):
> d = dict_like_object_created_somewhere_else()
> def some_other_methods(self):
> class C should behave like a it was the dict d. So I could do:
Is it a specific requirement that the class NOT be derived from dict?
Are you trying to look like a dict, but with a few extra features? Or
must you have a dict somewhere else (singleton ??!) that you're trying
to tie this to as a proxy.
Assuming you really have to tie this to some other dict, the first thing
you need to do is save d, perhaps as a line like:
self.d = dict_like_ob....
> c = C()
> print c["key"]
> print len(c)
> but also
> How can I achieve that? Do I need to define all methods like
> __getitem__, __len__, ... (what else?)
Because you're duck-typing, you don't need them all, just the ones your
user will need.
> to access the inner dict or is
> there something more slick?
The more slick is to derive from dict.
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