Question 1

How do I use HTTPX for asynchronous requests?

Accepted Answer

Use httpx.AsyncClient with async/await syntax, similar to aiohttp but with a requests-compatible API. The async support documentation provides examples for making non-blocking HTTP calls in async frameworks.

Question 2

HTTPX vs requests: which one should I use?

Accepted Answer

Choose HTTPX if you need modern features like HTTP/2, async support, integrated CLI, or strict timeouts. Stick with requests for simpler, synchronous projects or if you rely on its extensive ecosystem and broader community support.

Question 3

Does HTTPX support HTTP/2 by default?

Accepted Answer

No, HTTP/2 support is optional. You need to install it with pip install httpx[http2], as mentioned in the README. By default, it uses HTTP/1.1.

Question 4

How to test a WSGI app with HTTPX?

Accepted Answer

HTTPX can make requests directly to WSGI applications using the WSGI transport, allowing testing without a network server. This is documented in the advanced usage section for efficient unit testing.

Question 5

What are the performance differences between HTTPX and aiohttp?

Accepted Answer

HTTPX offers a sync and async API with requests compatibility, while aiohttp is purely async-focused. Performance varies by use case; HTTPX may have slight overhead due to additional features, but both are optimized for high-throughput scenarios.

Question 6

How to migrate from requests to HTTPX?

Accepted Answer

Replace import requests with import httpx and use similar methods, as the API is largely compatible. However, check the compatibility guide for differences in advanced features like streaming or authentication.

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