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NKUST ITC Python 社課
| 日期 | 內容 |
|---|---|
| 11/19 | DOM解析、API |
| 11/26 | 以下待訂 |
| 12/17 | 可能會辦活動 |
| 12/26 | 期末社員大會 |
HTML由以下3種東西組成
<!DOCTYPE html>
<html>
<body>
<h1>My First Heading</h1>
<div class="content">My first paragraph.</div>
</body>
</html>
<div class="content">My first paragraph.</div>
pip install beautifulsoup4
from bs4 import BeautifulSoup
import requests
rs = requests.get('https://movies.yahoo.com.tw/movie_intheaters.html')
dom = BeautifulSoup(rs.text, 'lxml')
print(dom.prettify()) # 輸出排版後的HTML
from bs4 import BeautifulSoup
with open("index.html") as f:
dom = BeautifulSoup(f, 'lxml')
print(dom.prettify()) # 輸出排版後的HTML
# find()尋找單一元素
from bs4 import BeautifulSoup
import requests
url = 'http://quotes.toscrape.com/'
rs = requests.get(url)
dom = BeautifulSoup(rs.text, 'lxml')
print(dom.find('p').text)
# find_all()尋找所有元素
from bs4 import BeautifulSoup
import requests
url = 'http://quotes.toscrape.com/'
rs = requests.get(url)
soup = BeautifulSoup(rs.text, 'lxml')
tags = soup.find_all(class_='text') # 找出所有class為text的資料
for tag in tags: # 搭配for顯示class為text的內容
print(tag.text)
from bs4 import BeautifulSoup
import requests
url = 'http://quotes.toscrape.com/'
rs = requests.get(url)
soup = BeautifulSoup(rs.text, 'html.parser')
tags = soup.find(class_='quote').find_all('a')
for tag in tags:
print(tag['href'])
<!DOCTYPE html>
<html>
<body>
<h1>My First Heading</h1>
<div class="content">My first paragraph.</div>
</body>
</html>
如上的html文件，只要這樣就能取出div的內容
print(dom.select(".content")[0].text)
# Output: My first paragraph.
在css selector中
故 class="content"在css selector中只要用
".content"
就可以表示
or
or
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| Syntax | Example | Reference | |
|---|---|---|---|
| # Header | Header | 基本排版 | |
| - Unordered List |
|
||
| 1. Ordered List |
|
||
| - [ ] Todo List |
|
||
| > Blockquote | Blockquote |
||
| **Bold font** | Bold font | ||
| *Italics font* | Italics font | ||
| ~~Strikethrough~~ | |||
| 19^th^ | 19th | ||
| H~2~O | H2O | ||
| ++Inserted text++ | Inserted text | ||
| ==Marked text== | Marked text | ||
| [link text](https:// "title") | Link | ||
|  | Image | ||
| `Code` | Code |
在筆記中貼入程式碼 | |
| ```javascript var i = 0; ``` |
|
||
| :smile: |  |
Emoji list | |
| {%youtube youtube_id %} | Externals | ||
| $L^aT_eX$ | LaTeX | ||
| :::info This is a alert area. ::: |
This is a alert area. |
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