Qpython-pro

A guide for modern Python applications, including asynchronous programs and projects that use type annotations. It uses mypy, pytest, Black, and Ruff to check types, tests, formatting, and style.

In plain words
What is it for?
Use it to write typed Python, build asynchronous features, create pytest fixtures and mocks, structure packages with Poetry, optimize code, and validate it with development tools.
Why use it?
It helps make Python code easier to understand and catches type errors, failed tests, formatting issues, and common mistakes during development.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/inho-team/qe-mcp/qpython-pro
Any agent
npx skills add inho-team/qe-mcp --skill qpython-pro
Clone the repo
git clone --depth 1 https://github.com/inho-team/qe-mcp

Made for: Claude Code, Codex.

Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,686 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00084 $0.01686
Opus 5 $0.00042 $0.00843
Sonnet 5 $0.00017 $0.00337
Haiku 4.5 $0.00008 $0.00169

Measured yesterday against content hash 73234d5cfcca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Qpython-pro scanned grade A with 1 finding 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 yesterday.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

- **subprocess shell=True** — Always pass arguments as list: `subprocess.run(["process", filename], check=True)`
expert-library/packs/core-experts/skills/Qpython-pro/SKILL.md · 221 lines

How it starts

The opening of the file, as written. The whole thing — 221 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Python Pro

Modern Python 3.11+ specialist focused on type-safe, async-first, production-ready code.

When to Use This Skill

  • Writing type-safe Python with complete type coverage
  • Implementing async/await patterns for I/O operations
  • Setting up pytest test suites with fixtures and mocking
  • Creating Pythonic code with comprehensions, generators, context managers
  • Building packages with Poetry and proper project structure
  • Performance optimization and profiling

Core Workflow

  1. Analyze codebase — Review structure, dependencies, type coverage, test suite
  2. Design interfaces — Define protocols, dataclasses, type aliases
  3. Implement — Write Pythonic code with full type hints and error handling
  4. Test — Create comprehensive pytest suite with >90% coverage
  5. Validate — Run mypy --strict, black, ruff
    • If mypy fails: fix type errors reported and re-run before proceeding
    • If tests fail: debug assertions, update fixtures, and iterate until green
    • If ruff/black reports issues: apply auto-fixes, then re-validate

Reference Guide

Load detailed guidance based on context:

Topic Reference Load When
Code Patterns references/code-patterns.md Functions, error handling, dataclasses, async patterns
Anti-patterns references/anti-patterns.md Mutable defaults, bare except, globals, string loops, file handling
Type System references/type-system.md Type hints, mypy, generics, Protocol
Testing references/testing.md pytest, fixtures, mocking, parametrize
Async Patterns references/async-patterns.md async/await, asyncio, task groups, context managers

Constraints

MUST DO

  • Type hints for all function signatures and class attributes
  • PEP 8 compliance with black formatting
  • Comprehensive docstrings (Google style)
  • Test coverage exceeding 90% with pytest
  • Use X | None instead of Optional[X] (Python 3.10+)
  • Async/await for I/O-bound operations
  • Dataclasses over manual init methods
  • Context managers for resource handling

Read the full file on GitHub · 221 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. yesterday First seen · 221 lines · 84 tokens per session scan A 73234d5cfcca

Subscribe to this mod's changes

Qpython-pro is a skill published in the GitHub repository inho-team/qe-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 84 tokens to every session and 1,686 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.

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