pynudger

opennudge Python linter (naming conventions and other automated checks)

✨ Features 🚀 Quick start 📚 Documentation 🤝 Contribute 👍 Adopters 📜 Legal

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Features

pynudger is an opinionated linter for Python projects, focused on naming conventions and making your code "more Pythonic".

• Length rules: Too long class/function names are flagged.
• Setters/getters: Discourages usage of setters/getters, encourages properties instead.
• No helpers/utils/commons: Incentivizes more descriptive and semantically coherent names for functionalities.

Table of contents

• Quick start
  • Installation
  • Usage
• Advanced
  • Configuration
  • Run as a pre-commit hook
  • Disable in code
  • Rules

Quick start

Installation

Tip

You can use your favorite package manager like uv, hatch or pdm instead of pip.

> pip install pynudger

Usage

To check against the rules run the following from the command line:

> pynudger check

You can pass additional arguments to pynudger check, like files to check (by default all Python files in the current directory):

> pynudger check path/to/file.py another_file.py

Advanced

Configuration

You can configure pynudger in pyproject.toml (or .pynudger.toml in the root of your project, just remove the [tool.pynudger] section), for example:

[tool.pynudger]
# include rules by their code
include_codes = [1, 2, 5] # default: all rules included
# exclude rules by their code (takes precedence over include)
exclude_codes = [4, 5, 6] # default: no rules excluded
# whether to exit after first error or all errors
end_mode = "first" # default: "all"

Tip

Rule-specific configuration can be found in the section below.

Run as a pre-commit hook

pynudger can be used as a pre-commit hook, to add as a plugin:

repos:
-   repo: "https://github.com/open-nudge/pynudger"
    rev: ...  # select the tag or revision you want, or run `pre-commit autoupdate`
    hooks:
    -   id: "pynudger"

Disable in code

You can disable pynudger on a line-by-line basis (you have to specify exact code), e.g.:

def set_my_too_long_function_name():  # noqa: PYNUDGER0, PYNUDGER16
    pass

or a line span:

# noqa-start: PYNUDGER0, PYNUDGER16
def set_my_too_long_function_name():
    pass

def set_another_long_function():
    pass
# noqa-end: PYNUDGER0, PYNUDGER16

def set_will_error_out_this_time():
    pass

It is also possible to disable all checks in a file by placing the following somewhere in the file (preferably at the top):

# noqa-file: PYNUDGER0, PYNUDGER16

Note

If you are running pynudger with ruff you should add lint.external = ["PYNUDGER"] to [tool.ruff] section in pyproject.toml to avoid removing # noqa: PYNUDGER comments.

Rules

Tip

Run pynudger rules to see the list of available rules.

pynudger provides the following rules:

Name	Description
PYNUDGER0	Avoid using setters in class names. Use properties instead.
PYNUDGER1	Avoid using setters in function names. Use properties instead.
PYNUDGER2	Avoid using setters in file names. Define file name without it.
PYNUDGER3	Avoid using getters in class names. Use properties instead.
PYNUDGER4	Avoid using getters in function names. Use properties instead.
PYNUDGER5	Avoid using getters in file names. Define file name without it.
PYNUDGER6	Avoid using utils in class names. Name the class appropriately.
PYNUDGER7	Avoid using utils in function names. Name the function appropriately.
PYNUDGER8	Avoid defining utils modules. Move functionality to appropriate modules.
PYNUDGER9	Avoid using helpers in class names. Name the class appropriately.
PYNUDGER10	Avoid using helpers in function names. Name the function appropriately.
PYNUDGER11	Avoid defining utils modules. Move functionality to appropriate modules.
PYNUDGER12	Avoid using common in class names. Name the class appropriately.
PYNUDGER13	Avoid using common in function names. Name the function appropriately.
PYNUDGER14	Avoid defining common modules. Move functionality to appropriate modules.
PYNUDGER15	Avoid long class names. Specify intent by nesting modules/packages.
PYNUDGER16	Avoid long function names. Specify intent by nesting modules/packages.
PYNUDGER17	Avoid long path names. Specify intent by nesting modules/packages.

with the following configurable options (in pyproject.toml or .pynudger.toml):

Option	Description	Affected rules	Default
pascal_length	Maximum allowed length of PascalCase names	PYNUDGER15	3
snake_length	Maximum allowed length of snake_case names	PYNUDGER16, PYNUDGER17	3
pascal_excludes	List of words to exclude from PascalCase length check	PYNUDGER15	[]
snake_excludes	List of words to exclude from snake_case length check	PYNUDGER16, PYNUDGER17	[]

Contribute

We welcome your contributions! Start here:

• Code of Conduct
• Contributing Guide
• Roadmap
• Changelog
• Report security vulnerabilities
• Open an Issue

Legal

• This project is licensed under the Apache 2.0 License - see the LICENSE file for details.
• This project is copyrighted by open-nudge - the appropriate copyright notice is included in each file.