montydb

library2.5.6pypypi✓ verified 84d ago

Monty, Mongo tinified. MongoDB implemented in Python. Current version 2.5.6, supports Python >=3.7. Released irregularly.

database

pip install montydb

github ↗package ↗

INSTALL

IMPORT

SIG · MONTYDB

montydb

databasepythonv2.5.6

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

MontyClient

✓ from montydb import MontyClient

✗ from monty import MontyClient

'monty' is not a valid module; must use 'montydb'.

connect

✓ from montydb import connect

✗ from pymongo import MongoClient

MontyDB mimics pymongo but is a separate library; using pymongo will connect to a real MongoDB instead.

Create an in-memory database and perform basic CRUD.

from montydb import MontyClient, connect # Using MontyClient with in-memory storage client = MontyClient() db = client.test_db collection = db.test_collection collection.insert_one({'name': 'Alice', 'age': 30}) print(collection.find_one({'name': 'Alice'}))

montydb --version

Debug

Known issues

gotchaMontyDB's 'import montydb' is correct, but users often mistakenly import 'monty' or 'montydb.client'.

fix

Use 'from montydb import MontyClient' or 'from montydb import connect'.

affects: all

gotchaMontyDB is not fully compatible with all MongoDB features; aggregation pipelines with unsupported operators may raise NotImplementedError.

fix

Check the documentation for supported operators; use native Python logic if needed.

affects: all

breakingVersion 2.5.0 introduced support for mongoengine but changed internal storage engine; existing databases may need migration.

fix

Back up your montydb data directory before upgrading, or use in-memory mode temporarily.

affects: >=2.5.0

gotchaIn-memory databases are per-process; they do not persist after restart. Users expecting persistence must specify a storage path.

fix

Use MontyClient(repository='path/to/data') for persistent file-based storage.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'monty'

Incorrect import; users attempt 'import monty' instead of 'montydb'.

fix

Run 'pip install montydb' and use 'from montydb import MontyClient'.

pymongo.errors.ServerSelectionTimeoutError: No primary server found

Using pymongo's MongoClient with MontyDB's connection string. MontyDB does not start a real MongoDB server.

fix

Use MontyClient from montydb, not pymongo's MongoClient.

NotImplementedError: The 'collStats' command is not supported

Attempt to use aggregation pipeline operators not implemented by MontyDB (e.g., $collStats).

fix

Replace unsupported operators with equivalent Python code or use simpler queries.

Upgrade

Version history

2.5.6latest on PyPI · released Nov 1, 2025

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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