fyrnheim

library0.14.0pypypi✓ verified 81d ago

Fyrnheim is a typed Python entity framework and dbt alternative built on Pydantic + Ibis. It allows defining typed entities with Pydantic, generating transformations, and running them anywhere. Current version 0.14.0, active development.

web-framework data database workflow

pip install fyrnheim

github ↗package ↗

INSTALL

IMPORT

SIG · FYRNHEIM

fyrnheim

web-frameworkpythonv0.14.0

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.

ActivityDefinition

✓ from fyrnheim import ActivityDefinition

✗ from fyrnheim import Entity

MetricsModel

✓ from fyrnheim import MetricsModel

QualityRunner

✓ from fyrnheim import QualityRunner

Defines a User entity and ingests a pandas DataFrame into a database via Ingestor.

import os import pandas as pd from fyrnheim import Entity, Ingestor class User(Entity): id: int name: str email: str df = pd.DataFrame([ {"id": 1, "name": "Alice", "email": "alice@example.com"}, ]) ingestor = Ingestor(target=os.environ.get('DATABASE_URL', 'sqlite://')) ingestor.ingest(User, df) print("Ingestion complete")

Debug

Known issues

deprecatedThe old `Entity.derive()` method has been deprecated in favor of the new transformation API using `Entity.transform()`.

fix

Replace `derive()` calls with `transform()`.

affects: >=0.9.0,<0.14.0

gotchaEvent source loading now composes Ibis expressions and uses UNION ALL. Previously, it materialized sources locally. If you relied on pandas-only behavior, your pipeline may break.

fix

Ensure your data sources are accessible from the Ibis backend (e.g., BigQuery, DuckDB).

affects: >=0.14.0

breakingThe `Ingestor` class signature changed: `target` parameter now expects a connection string instead of a SQLAlchemy engine.

fix

Pass a connection string (e.g., 'sqlite:///db.sqlite') instead of an engine object.

affects: >=0.10.0

Upgrade

Version history

0.14.0latest on PyPI · released Apr 28, 2026

Audit

Dependencies

ibis-frameworkrequiredCore query generation uses Ibis expressions

pydanticrequiredEntity definitions are Pydantic models

Agent activity

25 hits · last 30 days

node

Amazon

OpenAI (training)

Resources

githubhttps://github.com/deepskydatahq/fyrnheim ↗

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