# Modern Python

> Work with Python (`uv` instead of `python`, modern type syntax, linting, formatting, etc.) properly!

- Skill: `majiayu000/modern-python-3` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/modern-python-3`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/modern-python-3/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/majiayu000/modern-python-3

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- Never use `python`. Use `uv` instead of `python`
  - `uv add package-name`
  - `uv run script.py`
- Don't use `from __future__ import annotations`
- Use modern type syntax (`list[str], str | None`)
- Format with `uvx ruff format .`
- Lint with `uvx ruff check .` and `uvx ty check`
- Look before you leap (check conditions before acting)