I highly recommend Scrapy (http://www.scrapy.org http://www.scrapy.org). From their site: Scrapy is a fast high-level screen scraping and web crawling framewo

I highly recommend Scrapy (http://www.scrapy.org http://www.scrapy.org). From their site: Scrapy is a fast high-level screen scraping and web crawling framework, used to crawl websites and extract structured data from their pages. It can be used for a wide range of purposes, from data mining to monitoring and automated testing.