At 08:28 PM 5/6/2009 +0200, Hanno Schlichting wrote:
Doug Hellmann wrote:
> On May 6, 2009, at 1:46 PM, P.J. Eby wrote:
>
>> At 10:59 AM 5/6/2009 -0400, Doug Hellmann wrote:
>>
>>> On May 5, 2009, at 10:50 PM, P.J. Eby wrote:
>>>
>>>> At 12:03 PM 5/6/2009 +1000, Ben Finney wrote:
>>>>> I don't see any advantage, in the context of this discussion, to
>>>>> having an additional, incompatible naming for full-path-to-a-class.
>>>>
>>>> Setuptools doesn't limit an entry point to being a class, function,
>>>> or other top-level name within a module. It can be a method of a
>>>> class, or an attribute of an attribute. The ':' removes any
>>>> ambiguity as to which part of the name is the module, and which
>>>> parts are attributes within that module.
>>>
>>> Is that level of complexity useful in practice? I can understand how
>>> it came to be implemented, but is it actually used by any projects?
>>
>> I use it; I'm not sure who else does.
>>
>> The particular use case I have (and that's most likely to be shared)
>> is that the calling app or framework wants a callable or function, but
>> the providing app or library implements that callable as a classmethod
>> for convenience.
>
> That's pretty much what I expected. It feels a little messy to have
> plugins exposing "internals" like that but not so much so that I propose
> we don't allow it. The ":" syntax seems like the right way to go.
I'd be tempted to call this an edge-case. You should be able to expose
the internal detail you'd need via a module scope alias for the
particular case. That seems easier than providing a whole new notion.
Ah, now you reminded me of a forgotten detail: the specific use case
was that I had a library with a Command class that was widely used as
a base class; simply adding a classmethod to that base class allowed
all the existing classes to be used as plugins without any change to
their modules' source code: the entry points just always reference
the classmethod.
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