Guido van Rossum wrote:
> Alternative A: add a new method to the dict type with the semantics of
> __getattr__ from the last proposal, using default_factory if not None
> (except on_missing is inlined).
I'm not certain I understood this right but (after
s/__getattr__/__getitem__) this seems to suggest that for keeping a
dict of counts the code wouldn't really improve much:
dd = {}
dd.default_factory = int
for item in items:
# I want to do ``dd[item] += 1`` but with a regular method instead
# of __getitem__, this is not possible
dd[item] = dd.somenewmethod(item) + 1
I don't think that's much better than just calling ``dd.get(item,
0)``. Did I misunderstand Alternative A?
> Alternative B: provide a dict subclass that implements the __getattr__
> semantics from the last proposal.
If I didn't misinterpret Alternative A, I'd definitely prefer
Alternative B. A dict of counts is by far my most common use case...
STeVe
--
Grammar am for people who can't think for myself.
--- Bucky Katt, Get Fuzzy
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