> On Mar 21, 2015, at 4:53 PM, Barry Warsaw <ba...@python.org> wrote: > > On Mar 20, 2015, at 08:53 PM, Guido van Rossum wrote: > >> FWIW, I think __version__, __author__ etc. were bad ideas. Almost nobody >> manages these correctly. Note that the PEP 8 section starts with less than >> an endorsement: "If you *have* to have Subversion, CVS, or RCS crud in your >> source file, do it as follows." > > I tend to agree. Individual module version numbers are mostly useless, > especially with today's hash-based vcses. > > That's different than package versions, and for which I really need to > resurrect and update PEP 396.
I sort of think (though I haven’t completely convinced myself) that adding
something like __version__ to a package is a work around to the fact that
we don’t have an API that lets someone ask “what is the distribution and
version that this module/import-package came from”.
Something like:
>>> import theorticalapi
>>> import mymodule
>>>
>>> d = theorticalapi.module_dist(mymodule)
>>> print(d.name)
>>> mycustommodules
>>> print(d.version)
>>> 1.0
Since we (theoretically) should have all of this information already inside
of the packaging metadata, we just don’t have a way to say “given a particular
import, give me the information I want).
>
>> That said, if an official answer is required, common sense would suggest
>> that __version__ should go before the imports. (I would put it before the
>> docstring too, except then the docstring wouldn't be a docstring any more.
>> Go figure.)
>
> And after __future__ imports too, right?
>
> Cheers,
> -Barry
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