```
## 匹配网页内容
选好要使用的 tag 名称 < title>,找到这个网页的 title
```python
import re
res = re.findall(r"(.+?)", html)
print("\nPage title is: ", res[0])
# Page title is: Scraping tutorial 1 | 莫烦Python
```
想要找到中间的段落 < p>, 因为这个段落在 HTML 中还夹杂着 tab,new line, 所以给一个 flags=re.DOTALL 来对这些 tab, new line不敏感
```python
res = re.findall(r"
(.*?)
", html, flags=re.DOTALL) # re.DOTALL if multi line
print("\nPage paragraph is: ", res[0])
# Page paragraph is:
# 这是一个在 莫烦Python
# 爬虫教程 中的简单测试.
```
找所有的链接
```python
res = re.findall(r'href="(.*?)"', html)
print("\nAll links: ", res)
# All links:
['https://morvanzhou.github.io/static/img/description/tab_icon.png',
'https://morvanzhou.github.io/',
'https://morvanzhou.github.io/tutorials/scraping']
```
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://baozoulin.gitbook.io/python/pa-chong-jian-jie/11-wang-ye-ji-ben-zu-cheng-bu-fen.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.