def metadef_tag_get(context, namespace_name, name, session=None):
 session = (session or get_session())
 return metadef_tag_api.get(context, namespace_name, name, session)

def metadef_tag_get ( context , namespace_name , name , session = None ) : session = ( session or get_session ( ) ) return metadef_tag_api . get ( context , namespace_name , name , session )
get a metadata-schema tag or raise if it does not exist .