python-code-smells SKILL.md skillA

python-code-smells from lethe044/agentskill-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add lethe044/agentskill-kit/python-code-smells@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
lethe044/agentskill-kit
Path
skills/python-code-smells/SKILL.md
Versions recorded
1
Latest version
v1.0.0, committed Oct 26, 2026
Size
1,967 bytes
Repository stars
48
License
MIT

Finds common Python code smells with the ast module, such as bare except clauses, mutable default arguments, missing docstrings, very long functions and long argument lists. Use when the user asks for a quick review of Python code, a cleanup pass or a pre-commit style check.

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 code smells

A fast, dependency-free first pass over Python files. It does not replace a linter, it gives an
agent concrete line numbers to start a review from.

## When to use

- The user asks to review, clean up or "look over" Python code.
- Before a commit or pull request, to catch the obvious problems.
- When a project has no linter configured yet.

## How to run

```bash
python scripts/smells.py src/
python scripts/smells.py app.py utils.py --max-lines 40
```

Directories are searched recursively for `.py` files. Hidden folders and `__pycache__` are skipped.

## Rules

| Rule | Meaning |
| --- | --- |
| `bare-except` | `except:` without an exception type hides real errors |
| `mutable-default` | a list, dict or set used as a default argument value is shared between calls |
| `missing-docstring` | a public function or class (no leading underscore) has no docstring |
| `long-function` | a function is longer than `--max-lines` (default 50) |
| `too-many-args` | a function takes more than `--max-args` parameters (default 6) |
| `syntax-error` | the file could not be parsed |

## Output

JSON with `files` (number of files checked) and `findings`, a list of
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add lethe044/agentskill-kit/python-code-smells@sha256:a508ceadf6e5fc51

The line at the top of this page pins the label v1.0.0, 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_5dix2vljkhqavqea.svg)](https://markdownregistry.com/a/art_5dix2vljkhqavqea)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 26, 2026.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-10-26 6eb8fc4 1,967 BA 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 (1967 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

lethe044/agentskill-kit · 48 stars · license MIT · pushed 2026-10-26 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_5dix2vljkhqavqea
GET https://markdownregistry.com/api/v1/resolve?ref=lethe044/agentskill-kit/python-code-smells
GET https://markdownregistry.com/api/v1/blob/a508ceadf6e5fc518d4495caf17c847c4914efd3f0c02c65c92898b56287e0cc

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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