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Python Rules for OpenAI Codex

1 rule for Python

Python Codex Instructions: Environments, Types and pytest

Codex instructions for Python: Environments, Types and pytest. Append to AGENTS.md. Structure, security, and tests. uv 0.13.7 and Ruff 0.17.4, Nov 2026.

# Python Codex Instructions: Environments, Types and pytest ## Install Install the native export at `AGENTS.md` as an appended section, not a replacement and not a custom agent. Copy that export, not this catalog file. Catalog fields such as `tools` and `author` are for presets.dev. Install one skill file per name. Cursor, GitHub Copilot, Codex, Antigravity CLI, and Devin can all read `.agents/skills`, so a second copy with the same name collides. <!-- native:start --> # Python Codex Instructions: Environments, Types and pytest Section to append to `AGENTS.md` for Python. This is project guidance, not a custom agent. ## Updated for uv 0.13.7 and Ruff 0.17.4, Nov 2026 Do not upgrade dependencies or the framework version unless the task asks. ## Project shape Read `pyproject.toml` an...