(This set of video tutorials is suitable for learners who want to master crawler technology. Described in Python 3.7, the enterprise mainstream release. The content includes: Python foundation, Urllib, analysis (xpath, jsonpath, beautiful), requests, selenium, Scrapy framework, etc. Students with zero foundation can start from scratch, and students with Python foundation recommend to start learning crawlers. Some videos come directly from No. 52 Collection, tutorials illustrate the crawling of various websites, including design websites, recruitment websites, book websites, picture material websites, etc., and also explain the cracking of verification codes and the use of common coding platforms.)