def metadef_namespace_get_all(context, marker=None, limit=None, sort_key=None, sort_dir=None, filters=None, session=None):
 session = (session or get_session())
 namespaces = metadef_namespace_api.get_all(context, session, marker, limit, sort_key, sort_dir, filters)
 return namespaces

def metadef_namespace_get_all ( context , marker = None , limit = None , sort_key = None , sort_dir = None , filters = None , session = None ) : session = ( session or get_session ( ) ) namespaces = metadef_namespace_api . get_all ( context , session , marker , limit , sort_key , sort_dir , filters ) return namespaces
get a namespaces list .