python-patterns SKILL.md skillA
python-patterns from jartan-llc/grimoire is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jartan-llc/grimoire/python-patterns@git:20261023.fc78225Pins git:20261023.fc78225 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jartan-llc/grimoire
- Path
plugins/pythonica/skills/python-patterns/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261023.fc78225, committed Oct 23, 2026
- First version recorded
- Jun 18, 2026
- Size
- 13,789 bytes
- Repository stars
- 3
- License
- MIT
Pythonic idioms, PEP 8 standards, type hints, and best practices for building robust, efficient, and maintainable Python applications.
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 Patterns
Idiomatic Python patterns and best practices for building robust, efficient, and maintainable applications. Use it with `python-project-structure` for project layout and imports, `python-code-style` for linter, formatter and type-checker configuration, and `python-anti-patterns` for the pre-merge review checklist.
## Core Concepts
### 1. Readability Counts
Python prioritizes readability. Code should be obvious and easy to understand.
```python
# Good: Clear and readable
def get_active_users(users: list[User]) -> list[User]:
"""Return only active users from the provided list."""
return [user for user in users if user.is_active]
# Bad: Clever but confusing
def get_active_users(u):
return [x for x in u if x.a]
```
### 2. Explicit is Better Than Implicit
Avoid magic; be clear about what your code does.
```python
# Good: Explicit configuration
import logging
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
# Bad: Hidden side effects
import some_module
some_module.setup() # What does this do?
```
### 3. EAFP - Easier to Ask Forgiveness Than Permission
…Read the whole file at its exact version.
How to install
mdr add jartan-llc/grimoire/python-patterns@sha256:a28596b755a34d82The line at the top of this page pins the label git:20261023.fc78225, 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_ufw23onbnfcpqsb4)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 18, 2026 and Oct 23, 2026, about one every 42 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261023.fc78225 latest | 2026-10-23 | fc78225 | 13,789 B | A | view · diff |
| git:20260731.f6add68 | 2026-07-31 | f6add68 | 13,940 B | A | view · diff |
| git:20260705.faf6c3f | 2026-07-05 | faf6c3f | 13,918 B | A | view · diff |
| git:20260618.9d9291d | 2026-06-18 | 9d9291d | 13,918 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 (13789 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
jartan-llc/grimoire · 3 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ufw23onbnfcpqsb4 GET https://markdownregistry.com/api/v1/resolve?ref=jartan-llc/grimoire/python-patterns GET https://markdownregistry.com/api/v1/blob/a28596b755a34d823acc0ef4508121c3e7b8d01cab2f59dcd3caf28f218748eb
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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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