Export version number as a tuple

[Jonathan Lange]

launchpadlib is a library that other applications are coming to depend on. The API for launchpadlib itself is still in flux, with new APIs being added in each release.

It would be very useful to have a tuple of integers provided by launchpadlib that described the version. This way, depending applications could make intelligent decisions about whether they can work with a particular version of launchpadlib.

Note that this is a fairly standard practice among Python libraries. See bzrlib for an example of this being done well.

[Leonard Richardson (leonardr)]

Just to be sure: you're talking about the Python API of launchpadlib itself (things like Launchpad.login_with), right? Not launchpadlib's Python interface to the Launchpad web service, which is entirely determined by the documents Launchpad serves.

[Jonathan Lange (jml)]

Yes, that's right. login_with and launchpadlib.uris being the most interesting things for me personally.

[Gary Poster (gary)]

I suspect you don't like these, but they exist.

>>> import launchpadlib
>>> launchpadlib.__version__
'1.6.0'
>>> import pkg_resources
>>> pkg_resources.working_set.find(pkg_resources.Requirement.parse('launchpadlib')).parsed_version
('00000001', '00000006', '*final')

[Jonathan Lange (jml)]

Thanks Gary. I knew about the __version__ string, but that's a difficult thing to do programmatic comparison on.

I didn't know about pkg_resources though. Maybe it's not the place to ask, but, why aren't those zero-prefix numbers represented as actual ints?

[Gary Poster (gary)]

On Apr 23, 2010, at 12:30 PM, Jonathan Lange wrote:

> Thanks Gary. I knew about the __version__ string, but that's a difficult
> thing to do programmatic comparison on.

Ack.

> I didn't know about pkg_resources though. Maybe it's not the place to
> ask, but, why aren't those zero-prefix numbers represented as actual
> ints?

Ask PJE :-)