coffy 0.2.1

Lightweight local NoSQL, SQL, and Graph embedded database engine

Coffy: Local-First Embedded Database Engine for Python

Coffy is a lightweight, local-first embedded database engine supporting NoSQL, SQL, and Graph models — all in pure Python. Designed for fast prototyping, scripting, and local apps.

coffydb.org

Installation

pip install coffy

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Features

• Local persistence (JSON, SQLite)
• In-memory mode (:memory: or None)
• No server needed
• Logical and comparison operators
• Unified query interface

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Engines

Engine	Description	Docs
coffy.graph	Local graph database (NetworkX-based)	Graph Docs
coffy.nosql	Document store with chainable queries	NoSQL Docs
coffy.sql	Thin SQLite wrapper	SQL Docs

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What sets Coffy apart?

Only embedded Python graph DB with:

• ✅ Declarative traversal syntax (match_node_path(...))
• ✅ Label/type filtering, limit/offset, result projection
• ✅ Unified API for both nodes and relationships

Only pure-Python embedded document store with:

• ✅ Auto-indexing on all top-level fields
• ✅ Chainable logical queries (.where(...).eq(...).or_().in_())
• ✅ Merge/lookups across collections (like mini $lookup)
• ✅ JSON persistence or in-memory fallback

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🔗 Links

• coffydb.org
• PyPI: coffy
• Source: GitHub

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License

MIT License © 2025 Neel Sarathy