PYLINT(1) Pylint PYLINT(1) (NAME) pylint - Pylint [] [] [: PyPI] [] [: ] [] [] [] [: pre-commit.ci] [] [: CII] [] [: OpenSSF] [] [: Discord] [] (WHAT IS PYLINT?) Pylint Python 2 Python 3 . Python 3.10.0 . Pylint . (code smells) (refactor) . (INSTALL) pylint : pip install pylint enchant ( C enchant ): pip install pylint[spelling] IDE . ..SH " PYLINT (WHAT DIFFERENTIATES PYLINT?)" Pylint (typing) (astroid) ( pylint ). import logging as argparse Pylint argparse.error(...) logging argparse. pylint . [] [pylint] . - pylint 2022 pylint . (opinionated) . PYLINT (HOW TO USE PYLINT) Pylint : . (legacy) pylint --errors-only (refactor) --disable=C,R . Pylint ( ) . Pylint . : Pylint . . PyPI pylint . : pylint-pydantic pylint-django pylint-sonarjson . plugins . PYLINT (ADVISED LINTERS ALONGSIDE PYLINT) pylint ruff ( rust) flake8 ( ast) mypy pyright / pylance pyre ( ) bandit ( ) black isort ( ) autoflake ( ) pyupgrade ( ) pydocstringformatter ( pep257). PYLINT (ADDITIONAL TOOLS INCLUDED IN PYLINT) Pylint : o pyreverse ( .) o symilar ( pylint ) (CONTRIBUTING) (issues) . ! . (SHOW YOUR USAGE) (badge) README pylint . [] .UNINDENT . (LICENSE) pylint GPLv2 . CC BY-SA 4.0 : o doc/logo.png o doc/logo.svg . +------------------+--------------------------------------------------------------------------------------------------------------------+ |[: | pylint | |Tidelift] | Tidelift ] | utm_medium=referral&utm_campaign=readme> . Tidelift | | | | | | | | | | | | | | | | | | . | +------------------+--------------------------------------------------------------------------------------------------------------------+ (Tutorial) . . : tutor Desktop$ (Getting Started) Pylint --help . : pylint --help : Commands: --help-msg= --generate-toml-config Messages control: --disable= Reports: --reports= --output-format= : pylint --long-help . Pylint : Output: Using the default text output, the message format is : MESSAGE_TYPE: LINE_NUM:[OBJECT:] MESSAGE There are 5 kind of message types : * (C) convention, for programming standard violation * (R) refactor, for bad code smell * (W) warning, for python specific problems * (E) error, for probable bugs in the code * (F) fatal, if an error occurred which prevented pylint from doing further processing. Pylint (noisy) . . ..SS " Pylint (Your First Pylint'ing)" black . simplecaesar.py : #!/usr/bin/env python3 import string shift = 3 choice = input("would you like to encode or decode?") word = input("Please enter text") letters = string.ascii_letters + string.punctuation + string.digits encoded = "" if choice == "encode": for letter in word: if letter == " ": encoded = encoded + " " else: x = letters.index(letter) + shift encoded = encoded + letters[x] if choice == "decode": for letter in word: if letter == " ": encoded = encoded + " " else: x = letters.index(letter) - shift encoded = encoded + letters[x] print(encoded) . : tutor Desktop$ pylint simplecaesar.py ************* Module simplecaesar simplecaesar.py:1:0: C0114: Missing module docstring (missing-module-docstring) simplecaesar.py:5:0: C0103: Constant name "shift" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:8:0: C0103: Constant name "letters" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:9:0: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:13:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:15:12: C0103: Constant name "x" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:16:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:20:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:22:12: C0103: Constant name "x" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:23:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) ----------------------------------- Your code has been rated at 4.74/10 : "simplecaesar.py:1:0: C0114: Missing module docstring (missing-module-docstring)" C0114 . missing-module-docstring . : tutor Desktop$ pylint --help-msg=missing-module-docstring :missing-module-docstring (C0114): *Missing module docstring* Used when a module has no docstring.Empty modules do not require a docstring. This message belongs to the basic checker. ..SS . docstring . invalid-name . : #!/usr/bin/env python3 """This script prompts a user to enter a message to encode or decode using a classic Caesar shift substitution (3 letter shift)""" import string shift = 3 choice = input("would you like to encode or decode?") word = input("Please enter text") letters = string.ascii_letters + string.punctuation + string.digits encoded = "" if choice == "encode": for letter in word: if letter == " ": encoded = encoded + " " else: x = letters.index(letter) + shift encoded = encoded + letters[x] if choice == "decode": for letter in word: if letter == " ": encoded = encoded + " " else: x = letters.index(letter) - shift encoded = encoded + letters[x] print(encoded) : tutor Desktop$ pylint simplecaesar.py ************* Module simplecaesar simplecaesar.py:8:0: C0103: Constant name "shift" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:11:0: C0103: Constant name "letters" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:12:0: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:16:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:18:12: C0103: Constant name "x" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:19:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:23:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:25:12: C0103: Constant name "x" doesn't conform to UPPER_CASE naming style (invalid-name) simplecaesar.py:26:12: C0103: Constant name "encoded" doesn't conform to UPPER_CASE naming style (invalid-name) ------------------------------------------------------------------ Your code has been rated at 5.26/10 (previous run: 4.74/10, +0.53) ! Pylint invalid-name . . (UPPERCASE) (lowercase) . (regular expression) should match (([A-Z_][A-Z1-9_]*)|(__.*__))$ . Pylint (constant) . Pylint . PEP 8 . . : "should match [a-z_][a-z0-9_]{2,30}$". (a-z A-Z) . --const-rgx='[a-z\_][a-z0-9\_]{2,30}$' : tutor Desktop$ pylint simplecaesar.py --const-rgx='[a-z\_][a-z0-9\_]{2,30}$' ************* Module simplecaesar simplecaesar.py:18:12: C0103: Constant name "x" doesn't conform to '[a-z\\_][a-z0-9\\_]{2,30}$' pattern (invalid-name) simplecaesar.py:25:12: C0103: Constant name "x" doesn't conform to '[a-z\\_][a-z0-9\\_]{2,30}$' pattern (invalid-name) ------------------------------------------------------------------ Your code has been rated at 8.95/10 (previous run: 5.26/10, +3.68) . : . . Pylint . . pylint --generate-toml-config .toml . pyproject.toml .toml --rcfile . Pylint : o <#installation> o IDE <#ide-integration> o pre-commit <#pre-commit- integration> o python (CI) <#continuous-integration> (Command line installation) Pylint . . pip : pip install pylint enchant ( C enchant ): pip install pylint[spelling] pylint Python . ast Python . Python 3.6 3.8 ( walrus) 3.8 Python 3.6 . pylint <#continuous-integration> . : conda debian . . conda install pylint sudo apt-get install pylint IDE (Editor and IDE integration) Pylint IDE . . o Eclipse o Emacs o Eric IDE Project > Check o gedit ( gedit ) o Flymake <#pylint-in-flymake> o Jupyter Notebook o Komodo o Pycharm o PyDev o pyscripter Tool -> Tools. o Spyder View -> Panes -> Static code analysis o Sublime Text o TextMate <#pylint-in-textmate> o Vim o Visual Studio Code Preferences -> Settings o Visual Studio Code Pylint Extension o Visual Studio Python > Run PyLint (context menu) . o WingIDE : epylint 2.16.0 3.0.0 . emacs flymake : . Pylint TextMate Pylint : pip install pylint Python TextMate : 1. TextMate > Preferences 2. Bundles 3. Python Bundles > Python . Preferences Variables . TM_PYCHECKER pylint . (syntax checker) Control-Shift-V - .py Textmate . : PyCheckMate 1.2 - Pylint 1.4.4 No config file found, using default configuration Pylint ( 0 ). : Please install PyChecker, PyFlakes, Pylint, PEP 8 or flake8 for more extensive code checking. Pylint - TextMate Pylint . which Pylint : $ which pylint /usr/local/bin/pylint Pylint /usr/local/bin. 1. TextMate > Preferences 2. Variables 3. PATH ( Pylint /usr/local/bin/pylint /usr/local/bin ). $PATH:/opt/local/bin:/usr/local/bin:/usr/texbin . ... Pylint ..SS Pre-commit (Pre-commit integration) pylint pre-commit . pylint -- -- (CI) pre-push git . pylint (import) pylint ( ) . pre-commit.ci .pre-commit-config.yaml : .. sourcecode:: yaml ci: skip: [pylint] pylint . pylint . pre-commit (slice) . . () require_serial true . pylint .pre-commit-config.yaml : - repo: local hooks: - id: pylint name: pylint entry: pylint language: system types: [python] require_serial: true args: [ "-rn", # Only display messages "-sn", # Don't display the score ] <#tutorial> args . : - repo: local hooks: - id: pylint name: pylint entry: pylint language: system types: [python] args: [ "-rn", # Only display messages "-sn", # Don't display the score "--rcfile=pylintrc", # Link to your config file "--load-plugins=pylint.extensions.docparams", # Load an extension ] py-version . f-strings Python 3.5 Python 3.8 pylint (EOL) Python 3.5 pylint . py-version ( Python 3.5 ). pylint . (badge) README pylint . [] README.md ( Markdown ): [![linting: pylint](https://img.shields.io/badge/linting-pylint-yellowgreen)](https://github.com/pylint-dev/pylint) README.rst ( rst ): .. image:: https://img.shields.io/badge/linting-pylint-yellowgreen :target: https://github.com/pylint-dev/pylint GitHub Actions CI "name: pylint" pylint push . . pylint pylint pylint . pylint (semver) . : o (patch release) (1.2.3) (false positives) (crashes) . (minor) . useless-suppression useless-suppression . . o (minor releases) (1.2.0) astroid (false negatives) . . o (major releases) (1.0.0) ( pylint json ...) . . Pylint Pylint . : pylint [options] modules_or_packages pylint . 2.15 ( __init__.py ) : pylint mydir ************* Module mydir mydir/__init__.py:1:0: F0010: error while code parsing: Unable to load file mydir/__init__.py: [Errno 2] No such file or directory: 'mydir/__init__.py' (parse-error) 2.15 --recursive=y (namespace package) : pylint --recursive=y mydir mymodule mypackage pylint ( .py) ( __init__.py) . Pylint (import) . PYTHONPATH ..SS (On files) Python . python path . : pylint mymodule.py python path pylint directory/mymodule.py : directory Python ( __init__.py ) (implicit namespace package) directory python path . (With implicit namespace packages) (PEP 420) () --source-roots . __init__.py . (Globbing support) (globbing patterns) : pylint [options] packages/*/src (Command line options) ( ) . --version -h, --help Pylint (checker) . --disable= . --disable=all --enable= . . --disable --enable -d C,W,no-error,design --disable=all . . yes/no Python ( ) . --help . --rcfile . Pylint : 1. pylintrc 2. pylintrc.toml tool.pylint. . 3. .pylintrc 4. .pylintrc.toml tool.pylint. . 5. pyproject.toml tool.pylint. . pyproject.toml tool.pylint. [tool.pylint.'MESSAGES CONTROL']. . 6. setup.cfg pylint. 7. tox.ini pylint. 8. Pylint pyproject.toml .git/.hg . 9. Python Pylint Python pylintrc . . Python __init__.py . 10. PYLINTRC 11. /root : 1. .pylintrc 2. .config/pylintrc 12. /etc/pylintrc --generate-toml-config . : o o --generate-toml-config Pylint . : --ignore= . (base name) . --output-format= (text json custom). --msg-template=