def get_mods(package):
    """ List all loadable python modules in a directory

    This function looks inside the specified directory for all files that look
    like Python modules with a numeric prefix and returns them. It will omit
    any duplicates and return file names without extension.

    :param package: package object
    :returns:       list of tuples containing filename without extension,
                    major_version and minor_version
    """
    pkgdir = package.__path__[0]
    matches = filter(None, [PYMOD_RE.match(f) for f in os.listdir(pkgdir)])
    parse_match = lambda groups: (groups[0], int(groups[1]), int(groups[2]))
    return sorted(list(set([parse_match(m.groups()) for m in matches])),
                  key=lambda x: (x[1], x[2]))