32 lines
1.1 KiB
Python
32 lines
1.1 KiB
Python
import asyncio
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from crawlee.crawlers import ParselCrawler, ParselCrawlingContext
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async def main() -> None:
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# ParselCrawler crawls the web using HTTP requests
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# and parses HTML using the Parsel library.
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crawler = ParselCrawler(max_requests_per_crawl=10)
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# Define a request handler to process each crawled page
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# and attach it to the crawler using a decorator.
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@crawler.router.default_handler
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async def request_handler(context: ParselCrawlingContext) -> None:
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context.log.info(f'Processing {context.request.url} ...')
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# Extract relevant data from the page context.
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data = {
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'url': context.request.url,
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'title': context.selector.xpath('//title/text()').get(),
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}
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# Store the extracted data.
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await context.push_data(data)
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# Extract links from the current page and add them to the crawling queue.
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await context.enqueue_links()
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# Add first URL to the queue and start the crawl.
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await crawler.run(['https://crawlee.dev'])
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if __name__ == '__main__':
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asyncio.run(main())
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