openleveldb 0.1.5

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Openleveldb is a small pythonic wrapper around Plyvel

Features

Transparent object store

It works with python objects:

• Automatically encodes objects into bytes when saving to leveldb

• Automatically decodes bytes into their original type when retrieving objects from leveldb

Supported types include:

• int

• str

• numpy.ndarray

• Anything that is serializable by orjson

>>> db['key'] = {'key': [1, 2, 3]}
>>> db['key']
{'key': [1, 2, 3]}

Python dict-like protocol

It offers dict-like interface to LevelDB

>>> db["prefix", "key"] = np.array([1, 2, 3], dtype=np.int8)
>>> db["prefix", "key"]
array([1, 2, 3], dtype=int8)

>>> db = db["prefix", ...]
>>> db["key"]
array([1, 2, 3], dtype=int8)

String-only keys

The only possible type for the keys is str. It avoids several problems when working with prefixes.

Multiprocessing support

Experimental multiprocessing support using a background flask server, exposing the same API of a direct connection:

db = LevelDB(db_path="path_to_db", server_address="http://127.0.0.1:5000")