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A common base representation of python source code for pylint and other projects
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Type Name Latest commit message Commit time
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.github Add FUNDING.yml Jul 19, 2019
appveyor Setup a basic AppVeyor deployment. Dec 16, 2015
astroid Add exception inference for `UnicodeDecodeError` (#797) May 29, 2020
debian.sid rename the project astroid Jun 17, 2013
debian Fix small deb build bug with wrong test dir. Update changelog to 1.3.4. Feb 15, 2015
doc Fix the "Hello Astroid" example in index.rst (#662) Apr 9, 2019
tests Add exception inference for `UnicodeDecodeError` (#797) May 29, 2020
.coveragerc Properly ignore tests for coverage Feb 15, 2018
.gitignore Deleting personal setup May 25, 2019
.pre-commit-config.yaml Add the pre-commit hook Oct 2, 2018
.travis.yml Try to update pypy to 3.6.1 Mar 3, 2020
COPYING proper licensing information (LGPL-2.1). Hope I get it right this time. Apr 28, 2010
COPYING.LESSER proper licensing information (LGPL-2.1). Hope I get it right this time. Apr 28, 2010
ChangeLog Add exception inference for `UnicodeDecodeError` (#797) May 29, 2020 Exclude tests from getting installed from source distribution May 1, 2020
README.rst Drop support for Python 2 in README May 21, 2020
appveyor.yml Drop support for Python 3.4 Jun 20, 2019
pylintrc Enable duplicate-code check Dec 24, 2019
pytest.ini Tests are no longer installed May 17, 2018
setup.cfg Moved tests out of package directory (#704) Oct 15, 2019 Changed `python_requires` to use ">=" syntax (#780) May 1, 2020
tox.ini Relax upper bound on `wrapt` (#756) Feb 27, 2020


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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.


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 mailing list for support. See for subscription information and archives.


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).


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

pytest astroid
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