output all released package with maintainers still having willowgarage email addresses

gistfile1.py

from catkin_pkg.package import parse_package_string
import rosdistro

i = rosdistro.get_index(rosdistro.get_index_url())
for distro in ['groovy', 'hydro', 'indigo']:
    print(distro)
    maintainers = {}
    d = rosdistro.get_cached_distribution(i, distro)
    f = d._distribution_file
    for name in sorted(f.release_packages.keys()):
        xml = d.get_release_package_xml(name)
        if xml is None:
            continue
        try:
            pkg = parse_package_string(xml)
            for m in pkg.maintainers:
                if 'willowgarage' in m.email:
                    if m.name not in maintainers:
                        maintainers[m.name] = set([])
                    maintainers[m.name].add(pkg.name)
        except Exception as e:
            print(name, str(e))

    for m in sorted(maintainers.keys()):
        print(m)
        for pkg_name in sorted(maintainers[m]):
            print('- %s' % pkg_name)