Erik wrote:
Is there not a class that is somewhere between "dict" and "OrderedDict"
that provides what I need?
Such a class could exist, but the stdlib doesn't happen to provide
one as far as I know.
Note, though, that you're relying on implementation details of
OrderedDict when you use it to
On Sunday, April 30, 2017 at 2:30:25 AM UTC+1, Erik wrote:
> On 30/04/17 01:17, breamoreboy wrote:
> > On Sunday, April 30, 2017 at 12:23:19 AM UTC+1, Erik wrote:
> >> The other is that the documentation of collections.OrderedDict seems to
> >> be lacking (it is talking in terms of being a "dict" s
On 30/04/17 01:17, breamore...@gmail.com wrote:
On Sunday, April 30, 2017 at 12:23:19 AM UTC+1, Erik wrote:
The other is that the documentation of collections.OrderedDict seems to
be lacking (it is talking in terms of being a "dict" subclass, but it
actually isn't one).
E.
Could have fooled m
On 30/04/17 01:31, Ben Finney wrote:
Erik writes:
On 29/04/17 23:40, Ned Batchelder wrote:
For creating your own class that acts like a dict, you should derive
from collections.abc.MutableMapping, which only requires
implementing __getitem__, __setitem__, __delitem__, __iter__, and
__len__.
On Sunday, April 30, 2017 at 12:23:19 AM UTC+1, Erik wrote:
> On 29/04/17 23:40, Ned Batchelder wrote:
> > For creating your own class that acts like
> > a dict, you should derive from collections.abc.MutableMapping, which
> > only requires implementing __getitem__, __setitem__, __delitem__,
> > __
Erik writes:
> On 29/04/17 23:40, Ned Batchelder wrote:
> > For creating your own class that acts like a dict, you should derive
> > from collections.abc.MutableMapping, which only requires
> > implementing __getitem__, __setitem__, __delitem__, __iter__, and
> > __len__.
>
> Or, I could derive f
Erik wrote:
That's one of the points I'm trying to make - why is it harder than it
needs to be to do something this simple?
The built-in dict class is used internally to implement
various namespaces (module, class, instance, etc.), so it
needs to be extremely efficient. Funnelling all updates
t
On 29/04/17 23:40, Ned Batchelder wrote:
For creating your own class that acts like
a dict, you should derive from collections.abc.MutableMapping, which
only requires implementing __getitem__, __setitem__, __delitem__,
__iter__, and __len__.
Or, I could derive from collections.OrderedDict and j
On Saturday, April 29, 2017 at 4:20:06 PM UTC-4, Erik wrote:
> It seems a little onerous that I have to put the key checks in several
> places and implement each of those APIs manually again (and keep on top
> of that if dict() grows some new methods that involve setting items). Is
> there a co
