Python has many different HTTP clients that can be used for web scraping. However, not all of them support HTTP2 which can be vital in avoiding web scraper blocking.
Here are the most popular HTTP clients that support HTTP2:
- HTTPX - is one of the most popular new libraries for Python. HTTPX supports HTTP2 as well as asyncio making it great for web scraping:
import httpx
with httpx.Client(http2=True) as client:
response = client.get("https://httpbin.dev/anything")
- h2 is a low-level implementation of HTTP2 protocol. It's not recommended to use it directly for web scraping but it can be the only way to implement complex HTTP2 interactions for niche web scrapers.
import h2.connection
import h2.config
config = h2.config.H2Configuration()
conn = h2.connection.H2Connection(config=config)
conn.send_headers(stream_id=stream_id, headers=headers)
conn.send_data(stream_id, data)
socket.sendall(conn.data_to_send())
events = conn.receive_data(socket_data)
So, it's best to stick to httpx for HTTP2 though if you have a complex use case h2 can be adapted to extendible libraries like twisted.
How to Web Scrape with HTTPX and Python
Intro to using Python's httpx library for web scraping. Proxy and user agent rotation and common web scraping challenges, tips and tricks.
