Borrowing it
Nothing to install: this file belongs to Fmarzochi/EGC. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Fmarzochi/EGC/main/.kiro/steering/python-patterns.mdgit clone --depth 1 https://github.com/Fmarzochi/EGCWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/fmarzochi/egc/python-patterns)<a href="https://agentmods.dev/instructions/fmarzochi/egc/python-patterns"><img src="https://agentmods.dev/badge/instructions/fmarzochi/egc/python-patterns/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/fmarzochi/egc/python-patterns"><img src="https://agentmods.dev/badge/instructions/fmarzochi/egc/python-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00192 | $0.00192 |
| Opus 5.5 | $0.00077 | $0.00077 |
| Sonnet 5.5 | $0.00038 | $0.00038 |
| Haiku 4.5 | $0.00019 | $0.00019 |
Grade A, and why
EGC python-patterns.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to ECC python-patterns.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Python Patterns
This file extends the common patterns rule with Python specific content.
Protocol (Duck Typing)
from typing import Protocol
class Repository(Protocol):
def find_by_id(self, id: str) -> dict | None: ...
def save(self, entity: dict) -> dict: ...
Dataclasses as DTOs
from dataclasses import dataclass
@dataclass
class CreateUserRequest:
name: str
email: str
age: int | None = None
Context Managers & Generators
- Use context managers (
withstatement) for resource management - Use generators for lazy evaluation and memory-efficient iteration
Reference
See skill: python-patterns for comprehensive patterns including decorators, concurrency, and package organization.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 41 lines · 192 tokens per session scan A 6f6fab93935b
EGC python-patterns.md is an instructions file published in the GitHub repository Fmarzochi/EGC (67 stars, last pushed today), licensed Apache-2.0. It adds 192 tokens to every session, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to ECC python-patterns.md, differing in 0 lines, and is treated as a copy.
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