o ×Ügÿã@s,ddlZGdd„deƒZGdd„deƒZdS)éNcó,eZdZdZ‡fdd„Z‡fdd„Z‡ZS)Ú 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__ cstƒj|i|¤Žd|_dS©N)ÚsuperÚ__init__Ú_Singleton__instance©ÚselfÚargsÚkw©Ú __class__©úS/var/www/html/api-tag/env/lib/python3.10/site-packages/openpyxl/compat/singleton.pyr s zSingleton.__init__cs$|jdurtƒj|i|¤Ž|_|jSr)rrÚ__call__rr rrrs zSingleton.__call__©Ú__name__Ú __module__Ú __qualname__Ú__doc__rrÚ __classcell__rrr rró rcr)ÚCachedz™ Caching metaclass Child classes will only create new instances of themselves if one doesn't already exist. Does not work with __slots__ cs tƒj|i|¤Žt ¡|_dSr)rrÚweakrefÚWeakValueDictionaryÚ_Cached__cacherr rrrszCached.__init__cs.||jvr |j|Stƒj|Ž}||j|<|Sr)rrr)r r Úobjr rrr"s    zCached.__call__rrrr rrrr)rÚtyperrrrrrÚs