|f;8ddlZGddeZGddeZy)Nc,eZdZdZfdZfdZxZS) Singletonz Singleton metaclass Based on Python Cookbook 3rd Edition Recipe 9.13 Only one instance of a class can exist. Does not work with __slots__ c:tt| |i|d|_yN)superr__init___Singleton__instanceselfargskw __class__s q/var/dept/share/cheung/public_html/OutSchool/python/env/lib/python3.12/site-packages/openpyxl/compat/singleton.pyrzSingleton.__init__ s i'44cd|jtt||i||_|jSr)r rr__call__r s rrzSingleton.__call__s/ ?? "#It=tJrJDOr__name__ __module__ __qualname____doc__rr __classcell__rs@rrrs rrc,eZdZdZfdZfdZxZS)Cachedz Caching metaclass Child classes will only create new instances of themselves if one doesn't already exist. Does not work with __slots__ c^tt| |i|tj|_yr)rrrweakrefWeakValueDictionary_Cached__cacher s rrzCached.__init__s' i'44224 rc||jvr|j|Stt||}||j|<|Sr)rrrr)r r objrs rrzCached.__call__"sB 4<< <<% %It-t4  T rrrs@rrrs 5rr)rtyperrrrr$s""Tr