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Metadata-Version: 2.1
Name: pylint
Version: 2.17.4
Summary: python code static checker
Author-email: Python Code Quality Authority <code-quality@python.org>
License: GPL-2.0-or-later
Project-URL: Docs: User Guide, https://pylint.readthedocs.io/en/latest/
Project-URL: Source Code, https://github.com/PyCQA/pylint
Project-URL: homepage, https://github.com/PyCQA/pylint
Project-URL: What's New, https://pylint.readthedocs.io/en/latest/whatsnew/2/
Project-URL: Bug Tracker, https://github.com/PyCQA/pylint/issues
Project-URL: Discord Server, https://discord.com/invite/Egy6P8AMB5
Project-URL: Docs: Contributor Guide, https://pylint.readthedocs.io/en/latest/development_guide/contributor_guide/index.html
Keywords: static code analysis,linter,python,lint
Classifier: Development Status :: 6 - Mature
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: GNU General Public License v2 (GPLv2)
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Software Development :: Debuggers
Classifier: Topic :: Software Development :: Quality Assurance
Classifier: Topic :: Software Development :: Testing
Requires-Python: >=3.7.2
Description-Content-Type: text/x-rst
License-File: LICENSE
License-File: CONTRIBUTORS.txt
Requires-Dist: platformdirs (>=2.2.0)
Requires-Dist: astroid (<=2.17.0-dev0,>=2.15.4)
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Provides-Extra: spelling
Requires-Dist: pyenchant (~=3.2) ; extra == 'spelling'
Provides-Extra: testutils
Requires-Dist: gitpython (>3) ; extra == 'testutils'

`Pylint`_
=========

.. _`Pylint`: https://pylint.readthedocs.io/

.. This is used inside the doc to recover the start of the introduction

.. image:: https://github.com/PyCQA/pylint/actions/workflows/tests.yaml/badge.svg?branch=main
    :target: https://github.com/PyCQA/pylint/actions

.. image:: https://codecov.io/gh/PyCQA/pylint/branch/main/graph/badge.svg?token=ZETEzayrfk
    :target: https://codecov.io/gh/PyCQA/pylint

.. image:: https://img.shields.io/pypi/v/pylint.svg
    :alt: Pypi Package version
    :target: https://pypi.python.org/pypi/pylint

.. image:: https://readthedocs.org/projects/pylint/badge/?version=latest
    :target: https://pylint.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://img.shields.io/badge/linting-pylint-yellowgreen
    :target: https://github.com/PyCQA/pylint

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

.. image:: https://bestpractices.coreinfrastructure.org/projects/6328/badge
   :target: https://bestpractices.coreinfrastructure.org/projects/6328
   :alt: CII Best Practices

.. image:: https://api.securityscorecards.dev/projects/github.com/PyCQA/pylint/badge
   :target: https://api.securityscorecards.dev/projects/github.com/PyCQA/pylint
   :alt: OpenSSF Scorecard

.. image:: https://img.shields.io/discord/825463413634891776.svg
   :target: https://discord.gg/qYxpadCgkx
   :alt: Discord

What is Pylint?
---------------

Pylint is a `static code analyser`_ for Python 2 or 3. The latest version supports Python
3.7.2 and above.

.. _`static code analyser`: https://en.wikipedia.org/wiki/Static_code_analysis

Pylint analyses your code without actually running it. It checks for errors, enforces a
coding standard, looks for `code smells`_, and can make suggestions about how the code
could be refactored.

.. _`code smells`: https://martinfowler.com/bliki/CodeSmell.html

Install
-------

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For command line use, pylint is installed with::

    pip install pylint

Or if you want to also check spelling with ``enchant`` (you might need to
`install the enchant C library <https://pyenchant.github.io/pyenchant/install.html#installing-the-enchant-c-library>`_):

.. code-block:: sh

   pip install pylint[spelling]

It can also be integrated in most editors or IDEs. More information can be found
`in the documentation`_.

.. _in the documentation: https://pylint.readthedocs.io/en/latest/user_guide/installation/index.html

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What differentiate Pylint?
--------------------------

Pylint is not trusting your typing and is inferring the actual value of nodes (for a
start because there was no typing when pylint started off) using its internal code
representation (astroid). If your code is ``import logging as argparse``, Pylint
can check and know that ``argparse.error(...)`` is in fact a logging call and not an
argparse call. This  makes pylint slower, but it also let pylint find more issues if
your code is not fully typed.

    [inference] is the killer feature that keeps us using [pylint] in our project despite how painfully slow it is.
    - `Realist pylint user`_, 2022

.. _`Realist pylint user`: https://github.com/charliermarsh/ruff/issues/970#issuecomment-1381067064

pylint, not afraid of being a little slower than it already is, is also a lot more thorough than other linters.
There is more checks, some opinionated one that are deactivated by default, but can be enabled using configuration.

How to use pylint
-----------------

Pylint isn't smarter than you: it may warn you about things that you have
conscientiously done or check for some things that you don't care about.
During adoption, especially in a legacy project where pylint was never enforced,
it's best to start with the ``--errors-only`` flag, then disable
convention and refactor message with ``--disable=C,R`` and progressively
re-evaluate and re-enable messages as your priorities evolve.

Pylint is highly configurable and permits to write plugins in order to add your
own checks (for example, for internal libraries or an internal rule). Pylint also has an
ecosystem of existing plugins for popular frameworks and third party libraries.

.. note::

    Pylint supports the Python standard library out of the box. Third-party
    libraries are not always supported, so a plugin might be needed. A good place
    to start is ``PyPI`` which often returns a plugin by searching for
    ``pylint <library>``. `pylint-pydantic`_, `pylint-django`_ and
    `pylint-sonarjson`_ are examples of such plugins. More information about plugins
    and how to load them can be found at `plugins`_.

.. _`plugins`: https://pylint.readthedocs.io/en/latest/development_guide/how_tos/plugins.html#plugins
.. _`pylint-pydantic`: https://pypi.org/project/pylint-pydantic
.. _`pylint-django`: https://github.com/PyCQA/pylint-django
.. _`pylint-sonarjson`: https://github.com/omegacen/pylint-sonarjson

Advised linters alongside pylint
--------------------------------

Projects that you might want to use alongside pylint include ruff_ (**really** fast,
with builtin auto-fix, and a growing number of checks taken from popular
linters but implemented in ``rust``) or flake8_ (faster and simpler checks with very few false positives),
mypy_, pyright_ or pyre_ (typing checks), bandit_ (security oriented checks), black_ and
isort_ (auto-formatting), autoflake_ (automated removal of unused imports or variables),
pyupgrade_ (automated upgrade to newer python syntax) and pydocstringformatter_ (automated pep257).

.. _ruff: https://github.com/charliermarsh/ruff
.. _flake8: https://github.com/PyCQA/flake8
.. _bandit: https://github.com/PyCQA/bandit
.. _mypy: https://github.com/python/mypy
.. _pyright: https://github.com/microsoft/pyright
.. _pyre: https://github.com/facebook/pyre-check
.. _black: https://github.com/psf/black
.. _autoflake: https://github.com/myint/autoflake
.. _pyupgrade: https://github.com/asottile/pyupgrade
.. _pydocstringformatter: https://github.com/DanielNoord/pydocstringformatter
.. _isort: https://pycqa.github.io/isort/

Additional tools included in pylint
-----------------------------------

Pylint ships with two additional tools:

- pyreverse_ (standalone tool that generates package and class diagrams.)
- symilar_  (duplicate code finder that is also integrated in pylint)

.. _pyreverse: https://pylint.readthedocs.io/en/latest/pyreverse.html
.. _symilar: https://pylint.readthedocs.io/en/latest/symilar.html


.. This is used inside the doc to recover the end of the introduction

Contributing
------------

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We welcome all forms of contributions such as updates for documentation, new code, checking issues for duplicates or telling us
that we can close them, confirming that issues still exist, `creating issues because
you found a bug or want a feature`_, etc. Everything is much appreciated!

Please follow the `code of conduct`_ and check `the Contributor Guides`_ if you want to
make a code contribution.

.. _creating issues because you found a bug or want a feature: https://pylint.readthedocs.io/en/latest/contact.html#bug-reports-feedback
.. _code of conduct: https://github.com/PyCQA/pylint/blob/main/CODE_OF_CONDUCT.md
.. _the Contributor Guides: https://pylint.readthedocs.io/en/latest/development_guide/contribute.html

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Show your usage
-----------------

You can place this badge in your README to let others know your project uses pylint.

    .. image:: https://img.shields.io/badge/linting-pylint-yellowgreen
        :target: https://github.com/PyCQA/pylint

Learn how to add a badge to your documentation in the `the badge documentation`_.

.. _the badge documentation: https://pylint.readthedocs.io/en/latest/user_guide/installation/badge.html

License
-------

pylint is, with a few exceptions listed below, `GPLv2 <https://github.com/PyCQA/pylint/blob/main/LICENSE>`_.

The icon files are licensed under the `CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0/>`_ license:

- `doc/logo.png <https://raw.githubusercontent.com/PyCQA/pylint/main/doc/logo.png>`_
- `doc/logo.svg <https://raw.githubusercontent.com/PyCQA/pylint/main/doc/logo.svg>`_

Support
-------

Please check `the contact information`_.

.. _`the contact information`: https://pylint.readthedocs.io/en/latest/contact.html

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

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

   * - |tideliftlogo|
     - Professional support for pylint 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-pylint?utm_source=pypi-pylint&utm_medium=referral&utm_campaign=readme