pylint-dev/astroid

A common base representation of python source code for pylint and other projects

Python

584

4,381 commits

updated Oct 12, 2026

See the code

README

Astroid
=======

.. image:: https://codecov.io/gh/pylint-dev/astroid/branch/main/graph/badge.svg
    :target: https://codecov.io/gh/pylint-dev/astroid
    :alt: Coverage badge from codecov

.. image:: https://readthedocs.org/projects/astroid/badge/?version=latest
    :target: http://astroid.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status

.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
    :target: https://github.com/ambv/black

.. image:: https://results.pre-commit.ci/badge/github/pylint-dev/astroid/main.svg
   :target: https://results.pre-commit.ci/latest/github/pylint-dev/astroid/main
   :alt: pre-commit.ci status

.. |tidelift_logo| image:: https://raw.githubusercontent.com/pylint-dev/astroid/main/doc/media/Tidelift_Logos_RGB_Tidelift_Shorthand_On-White.png
   :width: 200
   :alt: Tidelift

.. list-table::
   :widths: 10 100

   * - |tidelift_logo|
     - Professional support for astroid is available as part of the
       `Tidelift Subscription`_.  Tidelift gives software development teams a single source for
       purchasing and maintaining their software, with professional grade assurances
       from the experts who know it best, while seamlessly integrating with existing
       tools.

.. _Tidelift Subscription: https://tidelift.com/subscription/pkg/pypi-astroid?utm_source=pypi-astroid&utm_medium=referral&utm_campaign=readme



What's this?
------------

The aim of this module is to provide a common base representation of
python source code. It is currently the library powering pylint's capabilities.

It provides a compatible representation which comes from the `_ast`
module.  It rebuilds the tree generated by the builtin _ast module by
recursively walking down the AST and building an extended ast. The new
node classes have additional methods and attributes for different
usages. They include some support for static inference and local name
scopes. Furthermore, astroid can also build partial trees by inspecting living
objects.


Installation
------------

Extract the tarball, jump into the created directory and run::

    pip install .


If you want to do an editable installation, you can run::

    pip install -e .


If you have any questions, please mail the code-quality@python.org
mailing list for support. See
http://mail.python.org/mailman/listinfo/code-quality for subscription
information and archives.

Documentation
-------------
http://astroid.readthedocs.io/en/latest/


Python Versions
---------------

astroid 2.0 is currently available for Python 3 only. If you want Python 2
support, use an older version of astroid (though note that these versions
are no longer supported).

Test
----

Tests are in the 'test' subdirectory. To launch the whole tests suite, you can use
either `tox` or `pytest`::

    tox
    pytest

Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.

ast
closember
hacktoberfest
inference-engine
parser
static-analysis
static-code-analysis

pylint-dev/astroid

A common base representation of python source code for pylint and other projects

Python

584

4,381 commits

updated Oct 12, 2026

See the code

README

Astroid
=======

.. image:: https://codecov.io/gh/pylint-dev/astroid/branch/main/graph/badge.svg
    :target: https://codecov.io/gh/pylint-dev/astroid
    :alt: Coverage badge from codecov

.. image:: https://readthedocs.org/projects/astroid/badge/?version=latest
    :target: http://astroid.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status

.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
    :target: https://github.com/ambv/black

.. image:: https://results.pre-commit.ci/badge/github/pylint-dev/astroid/main.svg
   :target: https://results.pre-commit.ci/latest/github/pylint-dev/astroid/main
   :alt: pre-commit.ci status

.. |tidelift_logo| image:: https://raw.githubusercontent.com/pylint-dev/astroid/main/doc/media/Tidelift_Logos_RGB_Tidelift_Shorthand_On-White.png
   :width: 200
   :alt: Tidelift

.. list-table::
   :widths: 10 100

   * - |tidelift_logo|
     - Professional support for astroid is available as part of the
       `Tidelift Subscription`_.  Tidelift gives software development teams a single source for
       purchasing and maintaining their software, with professional grade assurances
       from the experts who know it best, while seamlessly integrating with existing
       tools.

.. _Tidelift Subscription: https://tidelift.com/subscription/pkg/pypi-astroid?utm_source=pypi-astroid&utm_medium=referral&utm_campaign=readme



What's this?
------------

The aim of this module is to provide a common base representation of
python source code. It is currently the library powering pylint's capabilities.

It provides a compatible representation which comes from the `_ast`
module.  It rebuilds the tree generated by the builtin _ast module by
recursively walking down the AST and building an extended ast. The new
node classes have additional methods and attributes for different
usages. They include some support for static inference and local name
scopes. Furthermore, astroid can also build partial trees by inspecting living
objects.


Installation
------------

Extract the tarball, jump into the created directory and run::

    pip install .


If you want to do an editable installation, you can run::

    pip install -e .


If you have any questions, please mail the code-quality@python.org
mailing list for support. See
http://mail.python.org/mailman/listinfo/code-quality for subscription
information and archives.

Documentation
-------------
http://astroid.readthedocs.io/en/latest/


Python Versions
---------------

astroid 2.0 is currently available for Python 3 only. If you want Python 2
support, use an older version of astroid (though note that these versions
are no longer supported).

Test
----

Tests are in the 'test' subdirectory. To launch the whole tests suite, you can use
either `tox` or `pytest`::

    tox
    pytest

Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.

ast
closember
hacktoberfest
inference-engine
parser
static-analysis
static-code-analysis

Project health

Overall

7.7/10

Maintained

10/10

Code review

9/10
OpenSSF Scorecard

Latest release

4.3.4 · Oct 8, 2026

Releases this year

12

Significant stargazers

M Bussonnier

1,437 followers · starred Jun 2016

Tom Aarsen

1,002 followers · starred Dec 2021

Albert Villanova del Moral

644 followers · starred May 2022

Edgar Ramírez Mondragón

195 followers · starred Aug 2025