python常用到的爬虫库参考:
request:
http://docs.python-requests.org/zh_CN/latest/user/quickstart.html
beautifulsoup
https://www.crummy.com/software/BeautifulSoup/bs4/doc/
lxml:
regular-expressions
https://www.regular-expressions.info/
python3-regex
https://docs.python.org/3/library/re.html
phantomjs
scrapy
https://scrapy-chs.readthedocs.io/zh_CN/0.24/intro/tutorial.html