python - Beautifulsoup 将字符串转换为 bs4.element 模块的 ResultSet 对象

Question

有没有办法将 BeautifulSoup 的 ResultSet 对象保存到文件中，然后读取文件并能够使用 find_all 等命令?
例如，我的代码是

import requests
from bs4 import BeautifulSoup

#scraping
website_link = 'https://stackoverflow.com/'
request1 = requests.get(website_link)
source1 = request1.content
soup1 = BeautifulSoup(source1, 'lxml')


#saving
savefilename = 'question.txt'
with open(savefilename, "w", encoding="utf-8") as f:
    f.write(str(soup1))
    f.close()

在步骤 f.write(str(soup1)) ，我基本上是将 bs4.element 的 ResultSet 对象转换为字符串以进行保存，这是至关重要的，我还没有找到解决方法。一旦它被转换成一个字符串，有没有办法转换回 BeautifulSoup 的 ResultSet 对象，这将允许我使用 .find_all()和类似的命令？

Answer 1

只需创建另一个 BeautifulSoup目的:

import requests
from bs4 import BeautifulSoup

#scraping
website_link = 'https://stackoverflow.com/'
request1 = requests.get(website_link)
source1 = request1.content
soup1 = BeautifulSoup(source1, 'html.parser')


#saving
savefilename = 'question.txt'
with open(savefilename, "w", encoding="utf-8") as f:
    f.write(str(soup1))

# Open the saved file
with open(savefilename, "r", encoding="utf-8") as f:
    soup2 = BeautifulSoup(str(f.readlines()), "html.parser")
    
>>> print(type(soup2))
class 'bs4.BeautifulSoup'>