pyxis.py 文件源码

def __init__(self, dirpath):
        # Open LMDB environment in read-only mode
        self._lmdb_env = lmdb.open(dirpath, readonly=True, max_dbs=NB_DBS)

        # Open the default database(s) associated with the environment
        self.data_db = self._lmdb_env.open_db(DATA_DB)
        self.meta_db = self._lmdb_env.open_db(META_DB)

        # Read the metadata
        self.nb_samples = int(self.get_meta_str(NB_SAMPLES))