python-testing-patterns

A guide to testing Python code with pytest, reusable test fixtures, simulated dependencies, and test-driven development (writing tests before the code).

In plain words
What is it for?
Use it when writing Python tests, setting up a test suite, or applying common testing practices.
Why use it?
It helps you choose a consistent way to check that Python code works and keeps working as it changes.

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/theexperiencecompany/gaia/python-testing-patterns
Any agent
npx skills add theexperiencecompany/gaia --skill python-testing-patterns
Clone the repo
git clone --depth 1 https://github.com/theexperiencecompany/gaia

Made for: Claude Code, Codex.

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,005 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00038 $0.06005
Opus 5 $0.00019 $0.03002
Sonnet 5 $0.00008 $0.01201
Haiku 4.5 $0.00004 $0.00600

Measured yesterday against content hash 615b0a57fbac, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

python-testing-patterns 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

response = requests.get(f"{self.base_url}/users/{user_id}")
.agents/skills/python-testing-patterns/SKILL.md · 1,029 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 1,029 lines · 38 tokens per session scan A 615b0a57fbac

Subscribe to this mod's changes

python-testing-patterns is a skill published in the GitHub repository theexperiencecompany/gaia (285 stars, last pushed yesterday), with no licence file. It adds 38 tokens to every session and 6,005 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

olk

Microsoft Outlook and OneDrive CLI and MCP for email, calendar, contacts, tasks, and files, for personal and enterprise accounts.

rlrghb/olkcli · 28 tokens

outlook-mcp

Production-grade MCP server for personal Outlook (Outlook.com / Hotmail / Live). 62 typed Graph tools across mail, calendar, contacts, to-do, drafts, attachments, folders, threading, batch ops, delta-sync. Granular permissions, OS-keyring auth, /$batch-optimized triage and bulk read. Built for agents that need real…

mpalermiti/outlook-mcp · 93 tokens

Web research & page automation in Safari (Local MCP)

Use when the user wants to research on the web, pull data from a page, work across their open Safari tabs, or fill in / click through a site. Safari is one of the most-used domains (evaluatejs + navigate→read are top patterns). Powered by Local MCP, driving the user's real Safari.

lanchuske/local-mcp-releases · 74 tokens

PDF → spreadsheet — extract data into Excel (Local MCP)

Use when the user wants to pull data out of one or more PDFs (invoices, bank/credit-card statements, receipts, reports, tables) and put it into a spreadsheet. pdfread is one of the most-used tools; this codifies the read-PDF → structure → write-Excel workflow. Powered by Local MCP, on-device.

lanchuske/local-mcp-releases · 82 tokens

Daily brief / morning catch-up (Local MCP)

Use when the user asks "what's on my plate today", "catch me up", "morning brief", or wants a summary of their day across calendar, reminders and email. The single most common multi-step automation. Powered by Local MCP.

lanchuske/local-mcp-releases · 60 tokens

Inbox to action — triage, reply & schedule (Local MCP)

Use when the user wants to deal with their inbox — find what needs a response, draft replies, and turn emails into calendar events or reminders. Captures the common email→read→reply→schedule workflow. Powered by Local MCP.

lanchuske/local-mcp-releases · 61 tokens