python-3.x 无法使用BeautifulSoup查找(class_)属性

xwmevbvl 于 2023-05-02 发布在 Python

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我正在查找一个特定的类。我可以使用相同的语句与find（id），但类返回什么，所以美化错误了

import requests
from bs4 import BeautifulSoup

URL = "https://abcnews.go.com/Politics"
page = requests.get(URL)

# Testing Write to file from bs4
soup = BeautifulSoup(page.content, "html.parser")
results = soup.find(id="abcnews")
newresults = results.prettify
prettyresults = str(newresults)

abc_file = open("abc_pol.html", "wt")
n = abc_file.write(prettyresults)
abc_file.close()

# Listings

abclistings = soup.find(class_ = "subNav_outer")
newlistings = abclistings.prettify
prettylistings = str(abclistings)

abc_listings_file = open("ABC_Listings.html", "wt")
w = abc_listings_file.write(prettylistings)
abc_listings_file.close()

print(prettylistings)

$ /home/nicholas/Documents/Dev/Py/GN/bin/python /home/nicholas/Documents/Dev/Py/GN/abcnews.py
Traceback (most recent call last):
  File "/home/nicholas/Documents/Dev/Py/GN/abcnews.py", line 20, in <module>
    newlistings = abclistings.prettify
                  ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'prettify'

python-3.x

来源：https://stackoverflow.com/questions/76116109/unable-to-use-beautifulsoup-findclass-attribute

1条答案

按热度按时间

wvt8vs2t1#

在你的代码中需要纠正的事情：
1.您使用的类名不正确。使用soup.find(class_="subNav__outer")代替soup.find(class_="subNav_outer")。
1.最好使用results.prettify()而不是results.prettify，类似地使用abclistings.prettify()而不是abclistings.prettify。您不需要将结果类型转换为str，因为prettify()本身返回str。
下面是你的代码的一个更优化的版本：

import requests
from bs4 import BeautifulSoup

URL = "https://abcnews.go.com/Politics"
page = requests.get(URL)

soup = BeautifulSoup(page.content, "html.parser")

results = soup.find(id="abcnews")
with open("abc_pol.html", "wt") as f:
    f.write(results.prettify())

abclistings = soup.find(class_="subNav__outer")
with open("ABC_Listings.html", "wt") as f:
    f.write(abclistings.prettify())

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python-3.x 无法使用BeautifulSoup查找(class_)属性

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