python-async

Guide correct asyncio patterns with httpx and concurrency primitives.

1|Updated Mar 30, 2026
One-click install
npx skills add https://github.com/anicdh/agstack --skill python-async-anicdh
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: python-async
Source: https://github.com/anicdh/agstack/tree/main/.claude/skills/python/python-async
Command: npx skills add https://github.com/anicdh/agstack --skill python-async-anicdh

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This section describes how to craft correct and efficient asynchronous Python code, helping developers avoid common pitfalls in asyncio, concurrency, and HTTP I/O.

Core Features & Use Cases

  • Async pattern guidance: correct use of async/await, asyncio.gather, and event loop management for concurrent I/O-bound tasks.
  • HTTP I/O with httpx: best practices for AsyncClient usage, timeouts, and error handling in async HTTP calls.
  • Robust error handling and timeouts: guidance to prevent hangs and to gracefully recover from failures in async workflows.
  • Gotchas & safe practices: warnings about forgetting await, mixing sync and async code, and common concurrency mistakes.

Quick Start

Run an asyncio-based script that fetches multiple URLs concurrently using httpx.

Frequently Asked Questions about python-async

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fetch multiple URLs concurrently using httpx and asyncio?▼

To fetch multiple URLs concurrently, use asyncio.gather with an httpx.AsyncClient. This pattern manages concurrent I/O-bound HTTP requests safely, ensuring scalable async code execution across multiple endpoints.

What is the best way to prevent asyncio event loops from hanging?▼

The best way to prevent asyncio event loops from hanging is enforcing strict timeouts. Applying timeouts to async workflows ensures safe, scalable execution and graceful recovery from network or I/O failures.

Why does my async Python code run synchronously despite using async def?▼

Your async Python code runs synchronously because of common concurrency mistakes like forgetting await or mixing sync and async code. Correct use of await ensures proper event loop management for I/O-bound tasks.

Can I use httpx.AsyncClient for concurrent HTTP requests in Python?▼

Yes, you can use httpx.AsyncClient for concurrent HTTP requests. It provides best practices for async HTTP I/O, including proper timeout management and error handling within asyncio concurrency primitives.

What are common gotchas when building asyncio workflows?▼

Common asyncio gotchas include forgetting await statements, mixing synchronous and asynchronous code, and neglecting strict timeouts. Avoiding these mistakes ensures correct concurrency patterns and prevents unexpected workflow hangs.