How can I use Python 3.10 with asyncio for web scraping while respecting robots.txt?

How can I use Python 3.10 with asyncio for web scraping while respecting robots.txt?

You can use the aiohttp library for asynchronous HTTP requests and robots.txt parser to check compliance. Would you like a code example?

Yes, please provide a code example that demonstrates this.

Here's a simple example:

import aiohttp
import asyncio
from urllib.robotparser import RobotFileParser

async def fetch(url):
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            return await response.text()

async def main():
    url = 'http://example.com'
    rp = RobotFileParser()
    rp.set_url(url + '/robots.txt')
    rp.read()
    if rp.can_fetch('*', url):
        content = await fetch(url)
        print(content)
    else:
        print('Blocked by robots.txt')

asyncio.run(main())

This checks the robots.txt before scraping.

What if the website doesn't have a robots.txt file?

If a website doesn't have a robots.txt file, you can generally scrape it, but it's good practice to check the site's terms of service to ensure compliance.