Configuration as nested Python classes

gistfile1.py

class Conf:
    class Map:
        special_topics = {
            'learning_objects': 'Objets d\'Apprentissage',
            'authors': 'Auteur',
            'footer_files': 'Barre de navigation',
        }
    class Package:
        skeleton = 'conf/package/skeleton'
        class Externals:
            shared = 'path/to/shared/on/svn'
            theme = 'path/to/theme/on/svn'
        class Manifest:
            language='fr-FR'
            cluster = open('conf/manifest/cluster.xml','r').read()
            leaf = open('conf/manifest/item.xml','r').read()
            resource = '<resource identifier="" scormtype="sco" href="" type="webcontent"><file href=""/><dependency identifierref="shared_files"/></resource>\n'
            class Patterns:
                organization = 'org-%s'
                cluster = 'cluster-%s'
                leaf = 'identifier-%s'
                resource = 'resource-%s'