Method _init_db

utils/dataset.py:103–112

(self)

        # self.coco_transforms = make_coco_transforms(mode, cautious=False)

    def _init_db(self):
        self.env = lmdb.open(self.lmdb_dir,
                             subdir=os.path.isdir(self.lmdb_dir),
                             readonly=True,
                             lock=False,
                             readahead=False,
                             meminit=False)
        with self.env.begin(write=False) as txn:
            self.length = loads_pyarrow(txn.get(b'__len__'))
            self.keys = loads_pyarrow(txn.get(b'__keys__'))

    def __len__(self):
        return self.length