This is a www.zhihu.com crawler.
For example we have tags such as 游戏，互联网，I use the tags to classify all the datas.
We all know that Zhihu needs your account number,password and verification code or sometimes tells you to choose the upside down Chinese characters. This version I should input verification code artificially and I haven't had a good solution if I occur the upside down Chinese characters.
First, I use selenium to have a automatic dirver to open zhihu, we need chromedriver or firefoxdirver. Then open the "话题广场" to have all the top tags and its links stored.
According to the topics I stored in topics.txt, open all the webs, use a css scroll to imitate a mouse scroll, and store all subtopics. Then in subtopics, click all "下一页" to the end to store all contents in tags' order.