---
id: mypy
version: "2.3.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# mypy — Optional static typing for Python

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

## Install

pip install mypy
uv add mypy
poetry add mypy

## Description

<img src="docs/source/mypy_light.svg" alt="mypy logo" width="300px"/>

Mypy: Static Typing for Python
=======================================

[![Stable Version](https://img.shields.io/pypi/v/mypy?color=blue)](https://pypi.org/project/mypy/)
[![Downloads](https://img.shields.io/pypi/dm/mypy)](https://pypistats.org/packages/mypy)
[![Build Status](https://github.com/python/mypy/actions/workflows/test.yml/badge.svg)](https://github.com/python/mypy/actions)
[![Documentation Status](https://readthedocs.org/projects/mypy/badge/?version=latest)](https://mypy.readthedocs.io/en/latest/?badge=latest)
[![Chat at https://gitter.im/python/typing](https://badges.gitter.im/python/typing.svg)](https://gitter.im/python/typing?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[![Checked with mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://mypy-lang.org/)
[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
[![Linting: Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)

Got a...

## AI interpretation — verify before relying

Mypy is a static type checker for Python that detects type errors before runtime by analyzing type hints in your code, helping catch bugs without executing the program.

Verdict: Mypy is a mature, actively maintained static type checker (MIT licensed, no known vulnerabilities) with low install friction and broad Python version support. It is a top-1000 PyPI package suitable for development workflows seeking gradual typing adoption and early bug detection.

[View on SkillFed](https://skillfed.io/packages/mypy) · [View on PyPI](https://pypi.org/project/mypy/)