Continuing with Launchpad APIs for PPAs, let's illustrate how to find sources within a PPA.

Sources can be found, basically, by name, version, distroseries and status by calling getPublishedSources on a target archive.

>>> def test_source_lookup(lp): ...     ppa = lp.people['ubuntu-mozilla-daily'].archive ...    ubuntu = lp.distributions['ubuntu'] ...    jaunty = ubuntu.getSeries(name_or_version='jaunty') ...    last_firefox = ppa.getPublishedSources( ...        source_name='firefox-3.5', status='Published', distro_series=jaunty, ...        exact_match=True)[0] ...    print last_firefox.displayname

When it run, the output is:

firefox-3.5 3.5~b4~hg20090415r24712+nobinonly-0ubuntu1~umd1 in jaunty

Play with the arguments, also instead of fetching the first item (most recent one) from the collection you may iterate over it.