• flake8-no-else
  • Installation
  • Usage
  • Rules Enforced
  • Configuration
  • Motivation
  • Contributing
  • License

flake8-no-else

flake8-no-else is a plugin for Flake8 that promotes cleaner and more maintainable code by enforcing the Object Calisthenics rule: "Do Not Use ELSE." This plugin discourages the use of else, elif, and ternary operators in Python code, encouraging developers to use guard clauses and other techniques to keep code flat and prevent deep nesting.

Installation

You can install flake8-no-else using pip:

pip install flake8-no-else

Usage

Once installed, flake8-no-else will automatically integrate with Flake8. Run Flake8 as you normally would:

flake8 your_project_directory

flake8-no-else will check for the presence of else, elif, and ternary expressions and flag them as violations.

Rules Enforced

• NOE100: Use of else
• NOE101: Use of elif
• NOE102: Use of ternary operator (condition ? true_value : false_value)

Configuration

There are no specific configurations required for flake8-no-else. It works out-of-the-box once installed. However, you can exclude specific files or directories through your standard .flake8 configuration file.

Example .flake8 configuration:

[flake8]
exclude = tests/*
max-line-length = 120

Motivation

The motivation behind this plugin is to encourage developers to follow the "Do Not Use ELSE" rule of Object Calisthenics. This rule aims to reduce the complexity of code by avoiding multiple conditional branches, which often lead to deeply nested structures and can make code harder to read and maintain.

Contributing

Contributions to flake8-no-else are welcome! If you have suggestions for improvements or have found a bug, please open an issue or submit a pull request.

License

Distributed under the MIT License. See LICENSE file for more information.