BeautifulSoup
Beautiful Soup 4.4.0 文档 — Beautiful Soup 4.2.0 documentation (crummy.com)
```
https://www.crummy.com/software/BeautifulSoup/bs4/doc.zh/
```
Beautiful Soup 4.4.0 文档 — Beautiful Soup 4.2.0 documentation (crummy.com)
```
https://www.crummy.com/software/BeautifulSoup/bs4/doc.zh/
```