python-anti-patterns SKILL.md skillA
python-anti-patterns from wshobson/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wshobson/agents/python-anti-patterns@git:20260326.b6a3da4Pins git:20260326.b6a3da4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wshobson/agents
- Path
plugins/python-development/skills/python-anti-patterns/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260326.b6a3da4, committed Mar 26, 2026
- First version recorded
- Jan 30, 2026
- Size
- 8,161 bytes
- Repository stars
- 42,320
- License
- MIT
Use this skill when reviewing Python code for common anti-patterns to avoid. Use as a checklist when reviewing code, before finalizing implementations, or when debugging issues that might stem from known bad practices.
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 Anti-Patterns Checklist
A reference checklist of common mistakes and anti-patterns in Python code. Review this before finalizing implementations to catch issues early.
## When to Use This Skill
- Reviewing code before merge
- Debugging mysterious issues
- Teaching or learning Python best practices
- Establishing team coding standards
- Refactoring legacy code
**Note:** This skill focuses on what to avoid. For guidance on positive patterns and architecture, see the `python-design-patterns` skill.
## Infrastructure Anti-Patterns
### Scattered Timeout/Retry Logic
```python
# BAD: Timeout logic duplicated everywhere
def fetch_user(user_id):
try:
return requests.get(url, timeout=30)
except Timeout:
logger.warning("Timeout fetching user")
return None
def fetch_orders(user_id):
try:
return requests.get(url, timeout=30)
except Timeout:
logger.warning("Timeout fetching orders")
return None
```
**Fix:** Centralize in decorators or client wrappers.
```python
# GOOD: Centralized retry logic
@retry(stop=stop_after_attempt(3), wait=wait_exponential())
def http_get(url: str) -> Response:
…Read the whole file at its exact version.
How to install
mdr add wshobson/agents/python-anti-patterns@sha256:5d8074ae2408afcaThe line at the top of this page pins the label git:20260326.b6a3da4, 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.
[](https://markdownregistry.com/a/art_dhh2nd5ylcrxkjrr)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jan 30, 2026 and Mar 26, 2026, about one every 54 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260326.b6a3da4 latest | 2026-03-26 | b6a3da4 | 8,161 B | A | view · diff |
| git:20260130.cbb6049 | 2026-01-30 | cbb6049 | 8,122 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8161 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
wshobson/agents · 42,320 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dhh2nd5ylcrxkjrr GET https://markdownregistry.com/api/v1/resolve?ref=wshobson/agents/python-anti-patterns GET https://markdownregistry.com/api/v1/blob/5d8074ae2408afca827b384e26d151630901a6e6f876dad6acad299e497e8be3
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.