@classmethod
    def _init_dependencies(cls):
        global db
        if db is not None:
            return
        try:
            db = __import__('google.appengine.ext.db').appengine.ext.db
        except __HOLE__:
            raise InvalidCacheBackendError("Datastore cache backend requires the "
                                           "'google.appengine.ext' library")
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/beaker/ext/google.py/GoogleNamespaceManager._init_dependencies