---
id: pyee
version: "14.0.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# pyee — A rough port of Node.js's EventEmitter to Python with a few tricks of its own

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install pyee
uv add pyee
poetry add pyee

## Description

# pyee

[![Documentation Status](https://readthedocs.org/projects/pyee/badge/?version=latest)](https://pyee.readthedocs.io/en/latest/?badge=latest)

pyee supplies a `EventEmitter` object that is similar to the
`EventEmitter` class from Node.js. It also supplies a number of subclasses
with added support for async and threaded programming in python, such as
async/await.

## Docs

Autogenerated API docs, including basic installation directions and examples,
can be found at <https://pyee.readthedocs.io>.

## Development

See [DEVELOPMENT.md](./DEVELOPMENT.md).

## Changelog

See [CHANGELOG.md](./CHANGELOG.md).

## Contributors

See [CONTRIBUTORS.md](./CONTRIBUTORS.md).

## License

MIT/X11, see [LICENSE](./LICENSE).

## AI interpretation — verify before relying

pyee provides an EventEmitter class for Python that mimics Node.js's event-driven architecture, with support for async/await and threaded programming patterns.

Verdict: pyee is a well-maintained, low-friction event emitter library suitable for event-driven Python applications. Active development, permissive MIT licensing, minimal dependencies, and no known vulnerabilities make it a reliable choice for projects needing Node.js-style event patterns.

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