def _del_cache(self, name, destructor=None):
        try:
            obj = self.__dict__["_cache"].pop(name)
        except __HOLE__:
            return
        else:
            if destructor:
                destructor(obj)
dataset/ETHPy150Open kdart/pycopia/storage/pycopia/durusplus/persistent_data.py/PersistentData._del_cache