为什么ResultSet对象没有属性“查找”？
为什么ResultSet对象没有属性“查找”？
提问于 2020-07-15 16:22:24
我试图在维基百科头版“维基百科的其他领域”部分中删除文本。但是，我遇到了错误ResultSet object has no attribute 'find'。我的代码有什么问题，我如何让它工作？
import requests
from bs4 import BeautifulSoup
url = 'https://en.wikipedia.org/'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'lxml' )
otherAreasContainer = soup.find_all('div', class_='mp-bordered')
otherAreasContainerTexts = otherAreasContainer.find_all('li')
for otherAreasContainerText in otherAreasContainerTexts:
print(otherAreasContainerText.text)回答 3
Stack Overflow用户
回答已采纳
发布于 2020-07-15 16:34:01
在您的代码中，otherAreasContainer是ResultSet类型的，ResultSet没有.find_all()方法。
要从<li>下选择"Other areas of Wikipedia"，可以使用CSS选择器h2:contains("Other areas of Wikipedia") + div li。
例如：
import requests
from bs4 import BeautifulSoup
url = 'https://en.wikipedia.org/'
soup = BeautifulSoup(requests.get(url).content, 'lxml')
for li in soup.select('h2:contains("Other areas of Wikipedia") + div li'):
print(li.text)指纹：
Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
Help desk – Ask questions about using Wikipedia.
Local embassy – For Wikipedia-related communication in languages other than English.
Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.更多关于CSS选择器的信息。
Stack Overflow用户
发布于 2020-07-15 16:33:20
运行你的代码
Traceback (most recent call last):
File "h.py", line 7, in <module>
otherAreasContainerTexts = otherAreasContainer.find_all('li')
File "/home/td/anaconda3/lib/python3.7/site-packages/bs4/element.py", line 1620, in __getattr__
"ResultSet object has no attribute '%s'. You're probably treating a list of items like a single item. Did you call find_all() when you meant to call find()?" % key
AttributeError: ResultSet object has no attribute 'find_all'. You're probably treating a list of items like a single item. Did you call find_all() when you meant to call find()?这应该是你问题的一部分--让我们很容易发现你的问题！
find_all返回一个ResultSet，本质上是找到的元素列表。您需要枚举每个元素才能继续。
import requests
from bs4 import BeautifulSoup
url = 'https://en.wikipedia.org/'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'lxml' )
otherAreasContainer = soup.find_all('div', class_='mp-bordered')
for other in otherAreasContainer:
otherAreasContainerTexts = other.find_all('li')
for otherAreasContainerText in otherAreasContainerTexts:
print(otherAreasContainerText.text)Stack Overflow用户
发布于 2020-07-15 16:45:25
find_all的结果是一个列表，而list没有find或find_all属性，您必须迭代otherAreasContainer，然后在其上调用find_all方法，如下所示：
import requests
from bs4 import BeautifulSoup
url = 'https://en.wikipedia.org/'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'lxml')
otherAreasContainer = soup.find_all('div', class_='mp-bordered')
for other in otherAreasContainer:
otherAreasContainerTexts = other.find_all('li')
for otherAreasContainerText in otherAreasContainerTexts:
print(otherAreasContainerText.text)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62919388
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