1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
README for Pylint - https://pylint.pycqa.org/
=============================================
.. image:: https://github.com/PyCQA/pylint/actions/workflows/tests.yaml/badge.svg?branch=main
:target: https://github.com/PyCQA/pylint/actions
.. image:: https://coveralls.io/repos/github/PyCQA/pylint/badge.svg?branch=main
:target: https://coveralls.io/github/PyCQA/pylint?branch=main
.. 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://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
.. |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
======
Pylint
======
**It's not just a linter that annoys you!**
Pylint is a Python static code analysis tool which looks for programming errors,
helps enforcing a coding standard, sniffs for code smells and offers simple refactoring
suggestions.
It's highly configurable, having special pragmas to control its errors and warnings
from within your code, as well as from an extensive configuration file.
It is also possible to write your own plugins for adding your own checks or for
extending pylint in one way or another.
It's a free software distributed under the GNU General Public Licence unless
otherwise specified.
Development is hosted on GitHub: https://github.com/PyCQA/pylint/
You can use the code-quality@python.org mailing list to discuss about
Pylint. Subscribe at https://mail.python.org/mailman/listinfo/code-quality/
or read the archives at https://mail.python.org/pipermail/code-quality/
Pull requests are amazing and most welcome.
Install
-------
Pylint can be simply installed by running::
pip install pylint
If you are using Python 3.7.2+, upgrade to get full support for your version::
pip install pylint --upgrade
If you want to install from a source distribution, extract the tarball and run
the following command ::
python setup.py install
Do make sure to do the same for astroid, which is used internally by pylint.
For debian and rpm packages, use your usual tools according to your Linux distribution.
More information about installation and available distribution format
can be found here_.
Documentation
-------------
The documentation lives at https://pylint.pycqa.org/.
Pylint is shipped with following additional commands:
* pyreverse: an UML diagram generator
* symilar: an independent similarities checker
* epylint: Emacs and Flymake compatible Pylint
Testing
-------
You should be able to install our tests dependencies with::
pip install -r requirements_test.txt
You can then use pytest_ directly. If you want to run tests on a specific portion of the
code with pytest_ and your local python version::
# ( pip install pytest-cov )
python3 -m pytest
# Everything in tests/message with coverage for the relevant code:
python3 -m pytest tests/message/ --cov=pylint.message
coverage html
# Only the functional test "missing_kwoa_py3":
python3 -m pytest "tests/test_functional.py::test_functional[missing_kwoa_py3]"
You can also *optionally* install tox_. To run the test suite for a particular
Python version, with tox you can do::
tox -e py39
To run individual tests with ``tox``, you can do::
tox -e py37 -- -k name_of_the_test
If you're testing new changes in astroid you need to clone astroid_ and install
with an editable installation as follows::
git clone https://github.com/PyCQA/astroid.git
cd astroid
python3 -m pip install -e .
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
Use the badge in your project's README.md (or any other Markdown file)::
[](https://github.com/PyCQA/pylint)
Use the badge in your project's README.rst (or any other rst file)::
.. image:: https://img.shields.io/badge/linting-pylint-yellowgreen
:target: https://github.com/PyCQA/pylint
If you use GitHub Actions, and one of your CI workflows begins with "name: pylint", you
can use GitHub's `workflow status badges <https://docs.github.com/en/actions/monitoring-and-troubleshooting-workflows/adding-a-workflow-status-badge#using-the-workflow-file-name>`_
to show an up-to-date indication of whether pushes to your default branch pass pylint.
For more detailed information, check the documentation.
.. _here: https://pylint.pycqa.org/en/latest/user_guide/installation.html
.. _tox: https://tox.readthedocs.io/en/latest/
.. _pytest: https://docs.pytest.org/en/latest/
.. _pytest-benchmark: https://pytest-benchmark.readthedocs.io/en/latest/index.html
.. _pytest-cov: https://pypi.org/project/pytest-cov/
.. _astroid: https://github.com/PyCQA/astroid
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>`_
|
