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python code static checker

Project description

Pylint is a Python source code analyzer which looks for programming errors, helps enforcing a coding standard and sniffs for some code smells (as defined in Martin Fowler’s Refactoring book).

Pylint has many rules enabled by default, way too much to silent them all on a minimally sized program. It’s highly configurable and handle pragmas to control it from within your code. Additionally, it is possible to write plugins to add your own checks.

It’s a free software distributed under the GNU Public Licence.

Development is hosted on bitbucket: .

You can use the mailing list to discuss about Pylint. Subscribe at or read the archives at


Pylint requires the astng (the later the better) and logilab-common (version >= 0.53) packages.

From the source distribution, extract the tarball and run

python install

You’ll have to install dependencies in a similar way. For debian and rpm packages, use your usual tools according to your Linux distribution.

More information about installation and available distribution format may be found in the user manual in the doc subdirectory.


Look in the doc/ subdirectory or at

Pylint is shipped with following additional commands:

  • pyreverse: an UML diagram generator

  • symilar: an independent similarities checker

  • epylint: Emacs and Flymake compatible Pylint

  • pylint-gui: a graphical interface


order doesn’t matter…

  • Sylvain Thenault: main author / maintainer

  • Alexandre Fayolle: TkInter gui, documentation, debian support

  • Emile Anclin: used to maintain, py3k support

  • Mads Kiilerich: various patches

  • Torsten Marek, various patches

  • Boris Feld, various patches

  • Brian van den Broek: windows installation documentation

  • Amaury Forgeot d’Arc: patch to check names imported from a module exists in the module

  • Benjamin Niemann: patch to allow block level enabling/disabling of messages

  • Nathaniel Manista: suspicious lambda checking

  • Wolfgang Grafen, Axel Muller, Fabio Zadrozny, Pierre Rouleau, Maarten ter Huurne, Mirko Friedenhagen (among others): bug reports, feedback, feature requests…

  • Martin Pool (Google): warnings for anomalous backslashes, symbolic names for messages (like ‘unused’)

  • All the Logilab’s team: daily use, bug reports, feature requests

  • Other people have contributed by their feedback, if I’ve forgotten you, send me a note !

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