parso

A Python Parser

parso Permissive license MIT Active ★ 677 v0.8.7 released 2026-05-01

Install

parso on PyPI

pip

pip install parso

uv

uv add parso

poetry

poetry add parso

Package facts

License	MIT (permissive)
Python support	supports the current Python release (>=3.6)
Install friction	low — pure-Python wheel
Runtime dependencies	none
Maintenance	actively maintained — 104 days since the last release
Last repo commit	2026-07-31
First released	2017-05-20
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: parso-0.8.7-py2.py3-none-any.whl

Keywords: python, parser, parsing

Development Status :: 4 - BetaEnvironment :: PluginsIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Python ModulesTopic :: Text Editors :: Integrated Development Environments (IDE)Topic :: UtilitiesTyping :: Typed

About parso

from the package's own PyPI description — quoted content, verbatim

parso - A Python Parser

.. image:: https://github.com/davidhalter/parso/workflows/Build/badge.svg?branch=master :target: https://github.com/davidhalter/parso/actions :alt: GitHub Actions build status

.. image:: https://coveralls.io/repos/github/davidhalter/parso/badge.svg?branch=master :target: https://coveralls.io/github/davidhalter/parso?branch=master :alt: Coverage Status

.. image:: https://pepy.tech/badge/parso :target: https://pepy.tech/project/parso :alt: PyPI Downloads

.. image:: https://raw.githubusercontent.com/davidhalter/parso/master/docs/_static/logo_characters.png

Parso is a Python parser that supports error recovery and round-trip parsing for different Python versions (in multiple Python versions). Parso is also able to list multiple syntax errors in your python file.

Parso has been battle-tested by jedi_. It was pulled out of jedi to be useful for other projects as well.

Parso consists of a small API to parse Python and analyse the syntax tree.

A simple example:

.. code-block:: python

&gt;&gt;&gt;...

Read as markdown · JSON record · Source repository · Homepage

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Parso is a Python parser that recovers from syntax errors and parses code across multiple Python versions, producing an analyzable syntax tree and reporting multiple errors in a single pass.

Parso installs with zero runtime dependencies and is distributed as a pure-Python wheel, making it frictionless to add. The project is actively maintained with recent commits and a stable release cadence.

Parso is licensed under MIT, a permissive license that allows unrestricted use, modification, and distribution in both open-source and proprietary projects with minimal obligations.

Usage

pip install parso

import parso
module = parso.parse('hello + 1', version="3.9")
expr = module.children[0]
print(expr.get_code())

Requires Python 3.6 or later; parso dropped support for Python 2.7 and 3.4–3.5 as of version 0.8.0.

Verdict: Parso is a mature, actively maintained parser library with no security vulnerabilities, zero dependencies, and permissive licensing. It is well-suited for projects needing robust Python syntax analysis across multiple Python versions with graceful error handling.

Needs verification

Whether error recovery performance scales acceptably for very large files or deeply nested code structures.
The stability and completeness of support for Python 3.14+ given the fallback grammar introduced in 0.8.5.

python parser librarysyntax tree analysiserror recovery parsingmulti-version python parsingast generationsyntax error detectioncode parsing and analysis