---
id: tenacity
version: "9.1.4"
license: Apache 2.0
license_treatment: permissive
maintenance: active
---

# tenacity — Retry code until it succeeds

License: permissive · Maintenance: active · Popularity: top 100 on PyPI

## Install

pip install tenacity
uv add tenacity
poetry add tenacity

## Description

Tenacity
========
.. image:: https://img.shields.io/pypi/v/tenacity.svg
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.. image:: https://img.shields.io/endpoint.svg?url=https://api.mergify.com/badges/jd/tenacity&style=flat
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   :alt: Mergify Status

**Please refer to the** `tenacity documentation <https://tenacity.readthedocs.io/en/latest/>`_ **for a better experience.**

Tenacity is an Apache 2.0 licensed general-purpose retrying library, written in
Python, to simplify the task of adding retry behavior to just about anything.
It originates from `a fork of retrying
<https://github.com/rholder/retrying/issues/65>`_ which is sadly no longer
`maintained <https://julien.danjou.info/python-tenacity/>`_. Tenacity isn't
api compatible with retrying but adds significant new functionality and
fixes a number of longstanding bugs.

The simplest use case is retrying a flaky function whenever...

## AI interpretation — verify before relying

Tenacity is a general-purpose retrying library that simplifies adding retry logic to functions and code blocks with configurable stop conditions, wait strategies, and exception handling.

Verdict: Tenacity is a well-maintained, zero-dependency retry library with permissive licensing and no known vulnerabilities. It's suitable for production use across current Python versions, offering flexible retry strategies via decorators and context managers.

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