On Aug 21, 2013, at 6:36 AM, Paul Moore <p.f.moore@gmail.com> wrote:

On 21 August 2013 11:30, Donald Stufft <donald@stufft.io> wrote:

On Aug 21, 2013, at 6:29 AM, Donald Stufft <donald@stufft.io> wrote:

introspecting the author email address

Of course I wrote that and then did summary because the location of the author email address changed between Metadata 1.x and 2.x and I didn't feel like looking up the exact difference.

:-)

So would you see the API for author being

if meta.version < (2, 0):

author = meta["whatever_it_is_in_1.x"]
else:
author = meta["whatever_it_is_in_2.x"]

(i.e., the metadata version would be available)?

Sounds like a sensible approach.

Paul.

But in general I'm very much in favor of composed APIs instead of having things like WheelMetadata, Sdist2Metadata, InstalledDBMetadata etc. Less code and easier to switch out pieces (e.g. in your own code you wouldn't need to change the metadata handling based on if it was a Wheel or a Sdist2, just load the appropriate file type and pass the mapping into the Metadata api).