python-patterns

npx skills add mturac/everything-openai-codex --skill python-patterns --agent codex

Same command for any agent — swap --agent for claude-code, cursor, copilot.

# Python Development Patterns Idiomatic Python patterns and best practices for building robust, efficient, and maintainable applications. ## When to Activate - Writing new Python code - Reviewing Python code - Refactoring existing Python code - Designing Python packages/modules ## Core Principles ### 1. Readability Counts Python prioritizes readability. Code should be obvious and easy to understand. ```python # Good: Clear and readable def get_active_users(users: list[User]) -> list[User]: """Return only active users from the provided list.""" return [user for user in users if user.is_active] # Bad: Clever but confusing def get_active_users(u): return [x for x in u if x.a] ``` ### 2. Explicit is Better Than Implicit Avoid magic; be clear about what your code does. ```python # Good: Explicit configuration import logging logging.basicConfig( level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s' ) # Bad: Hidden side effects import some_module some_module.setup() # What does this do? ``` ### 3. EAFP - Easier to Ask Forgiveness Than Permission Python prefers exception handling over checking conditions. ```python # Good: EAFP style def get_value(dictionary: di

Code formatting
black .
isort .
Linting
ruff check .
pylint mypackage/
Type checking
mypy .
Testing
pytest --cov=mypackage --cov-report=html