On 4/25/2013 7:49 PM, Nick Coghlan wrote:
On Fri, Apr 26, 2013 at 12:38 PM, Guido van Rossum <gu...@python.org> wrote:
If the above syntax won't work, that isinstance() outcome isn't really
important. :-(
Can't we do some kind of callable check? There may be some weird
decorators that won't work, but they aren't likely to be useful in
this context.
Yeah, it may not be as tricky as I feared: adding "not
callable(attr_val)" to the conditions for deciding whether or not to
convert a class attribute to an instance of the enum would likely
suffice to address the method problem.
You couldn't create an enum of callables, but that would be a
seriously weird thing to do anyway....
But aren't all classes callable? But you are referring to the initial
values of the items, but still, why should those be restricted from
being any general object? Not being _functions_ is probably OK, but I'm
not sure how strong the distinction is between functions and classes,
regarding being callable...
So objects are only callable if the class contains a def __call__, but
still, that seems quite restrictive.
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