writing-python SKILL.md skillA

writing-python from alexei-led/cc-thingz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add alexei-led/cc-thingz/writing-python@git:20260928.3135f26

Pins git:20260928.3135f26 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
alexei-led/cc-thingz
Path
src/skills/writing-python/SKILL.md
Versions recorded
6
Latest version
git:20260928.3135f26, committed Sep 28, 2026
First version recorded
Jun 27, 2026
Size
2,523 bytes
Repository stars
38
License
MIT

Idiomatic Python 3.12+ development. Use when writing Python code, CLI.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Python Development

`pyproject.toml` is the source of truth for the Python target, tools, scripts, and dependencies. Check it, `.python-version`, and CI before using 3.12-only syntax. Project conventions win over these defaults.

## Toolchain

- uv for environments and commands (`uv run`, `uv add`); never call `pip` directly. Match the lockfile already in use.
- Ruff for lint and format. Pyright for types, or `ty` only when the project has adopted it.
- pytest for tests.

## Defaults

- Stdlib before packages: `argparse`, `dataclasses`, `pathlib`, `json`, `urllib`, `logging`. Do not add Rich, pydantic, or dotenv only for polish.
- 3.12+ typing: `X | Y`, builtin generics, PEP 695 generics and `type` aliases. Keep legacy `TypeVar` style when editing pre-3.12 modules.
- `@dataclass(frozen=True, slots=True)` for small values; `TypedDict` with `NotRequired` at recurring JSON boundaries; `Protocol` owned by the consumer. Keep `dict[str, Any]` at the boundary only.
- Import collection ABCs from `collections.abc`. Take `Sequence[T]` for read-only inputs.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add alexei-led/cc-thingz/writing-python@sha256:0e5c9311d8a9c744

The line at the top of this page pins the label git:20260928.3135f26, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_b7jozmheogi23z6u.svg)](https://markdownregistry.com/a/art_b7jozmheogi23z6u)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Jun 27, 2026 and Sep 28, 2026, about one every 19 days. Its first recorded version is graded B and its latest A.

versioncommittedcommitsizeaudit
git:20260928.3135f26 latest2026-09-28 3135f26 2,523 BA view · diff
git:20260914.cab76792026-09-14 cab7679 2,851 BA view · diff
git:20260716.29b4d222026-07-16 29b4d22 2,715 BA view · diff
git:20260702.93f966d2026-07-02 93f966d 2,718 BB view · diff
git:20260629.26ad5b32026-06-29 26ad5b3 2,595 BB view · diff
git:20260627.a4cca8d2026-06-27 a4cca8d 2,018 BB view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2523 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

alexei-led/cc-thingz · 38 stars · license MIT · pushed 2026-10-25 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_b7jozmheogi23z6u
GET https://markdownregistry.com/api/v1/resolve?ref=alexei-led/cc-thingz/writing-python
GET https://markdownregistry.com/api/v1/blob/0e5c9311d8a9c7449aa207c49ee535adb6bda93901019b121d86801fb54bd0bd

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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