leveldb

library0.201pypypiunverified

This package provides Python bindings for the LevelDB key-value store. It allows Python applications to interact with LevelDB databases for embedded, persistent key-value storage. Note: This specific PyPI package (`leveldb`) is largely unmaintained (last release 2017). Version 0.201. Releases are infrequent to non-existent.

database serialization

pip install leveldb

package ↗homepage ↗

INSTALL

IMPORT

SIG · LEVELDB

leveldb

databasepythonv0.201

Install

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Import

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Disk

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Pass rate

0/ 10

Env Coverage0 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v? · pip install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.920 runs

build_error

glibc

py 3.10–3.920 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

LevelDB

✓ import leveldb db = leveldb.LevelDB('./path/to/db')

✗ from leveldb import LevelDB

The primary interface is directly from the top-level `leveldb` module, usually instantiated as `leveldb.LevelDB`.

This example demonstrates opening a LevelDB database, putting and getting key-value pairs (which must be bytes), iterating over all entries, and handling missing keys.

import leveldb import os import shutil # Define a temporary database path db_path = './my_temp_leveldb' # Ensure clean slate for demonstration if os.path.exists(db_path): shutil.rmtree(db_path) try: # Open the database, creating it if it doesn't exist # Note: create_if_missing is implicitly True by default db = leveldb.LevelDB(db_path) print(f"Database opened at {db_path}") # Put a key-value pair (keys and values must be bytes) db.Put(b'name', b'Alice') db.Put(b'age', b'30') print("Put: name -> Alice, age -> 30") # Get a value name = db.Get(b'name') print(f"Get 'name': {name.decode('utf-8')}") # Iterate through keys print("All keys in DB:") for key, value in db.RangeIter(): print(f" {key.decode('utf-8')}: {value.decode('utf-8')}") # Try to get a non-existent key (raises KeyError) try: db.Get(b'city') except KeyError: print("Successfully caught KeyError for non-existent key 'city'") finally: # Clean up the database directory if os.path.exists(db_path): shutil.rmtree(db_path) print(f"Cleaned up database at {db_path}")

Debug

Known issues

breakingThis `leveldb` PyPI package is unmaintained (last release 2017) and is known to have compatibility issues with newer Python versions and operating systems. For active development and better support, consider using `plyvel` (https://pypi.org/project/plyvel/), which is an actively maintained alternative.

fix

Migrate to `plyvel`. It offers similar functionality with ongoing maintenance. Installation for `plyvel` is `pip install plyvel`.

affects: <=0.201

gotchaKeys and values *must* be `bytes`. Attempting to use `str` will result in a `TypeError` or unexpected behavior.

fix

Always encode strings to bytes (e.g., `b'my_key'` or `'my_key'.encode('utf-8')`) before passing them to LevelDB methods like `Put` or `Get`.

affects: <=0.201

gotchaRetrieving a non-existent key with `db.Get(key)` will raise a `KeyError`, not return `None`.

fix

Wrap `db.Get(key)` calls in a `try...except KeyError` block, or use an alternative like `plyvel`'s `get(key, default=None)` which provides a more Pythonic default return.

affects: <=0.201

gotchaOnly one process can open a LevelDB database at a time for writes. Attempting to open an already-locked database for writing will result in an error or hang, typically `leveldb.Error`.

fix

Ensure proper resource management, closing database connections when no longer needed. If multiple processes/threads need to access the same DB, consider a separate serialization layer or design your application to use separate DBs.

affects: <=0.201

gotchaRequires the C++ LevelDB library to be installed on the system *before* `pip install leveldb`. Without it, installation will fail with compilation errors.

fix

Install the appropriate `libleveldb-dev` (or equivalent) package for your operating system (e.g., `sudo apt-get install libleveldb-dev` on Debian/Ubuntu, `brew install leveldb` on macOS).

affects: <=0.201

Upgrade

Version history

0.201latest on PyPI · released Dec 9, 2019

Audit

Dependencies

LevelDB C++ LibraryrequiredThis package provides bindings to the LevelDB C++ library, which must be installed on your system. Installation varies by OS (e.g., `sudo apt-get install libleveldb-dev` on Debian/Ubuntu).

Agent activity

9 hits · last 30 days

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Resources

packagehttps://pypi.org/project/leveldb/ ↗

homepagehttps://code.google.com/p/py-leveldb/ ↗