BeautifulSoup“AttributeError：'NoneType'对象没有属性'text'”

Question

我用bs4抓网weather-searched Google，当有一个时，Python找不到<span>标签。我怎么解决这个问题？

我试图用<span>和class找到这个id，但都失败了。

<div id="wob_dcp">
    <span class="vk_gy vk_sh" id="wob_dc">Clear with periodic clouds</span>    
</div>

以上是我试图在page中搜索的HTML代码：

对不起，由于声誉，我无法发布图片^^;

response = requests.get('https://www.google.com/search?hl=ja&ei=coGHXPWEIouUr7wPo9ixoAg&q=%EC%9D%BC%EB%B3%B8+%E6%A1%9C%E5%B7%9D%E5%B8%82%E7%9C%9F%E5%A3%81%E7%94%BA%E5%8F%A4%E5%9F%8E+%EB%82%B4%EC%9D%BC+%EB%82%A0%EC%94%A8&oq=%EC%9D%BC%EB%B3%B8+%E6%A1%9C%E5%B7%9D%E5%B8%82%E7%9C%9F%E5%A3%81%E7%94%BA%E5%8F%A4%E5%9F%8E+%EB%82%B4%EC%9D%BC+%EB%82%A0%EC%94%A8&gs_l=psy-ab.3...232674.234409..234575...0.0..0.251.929.0j6j1......0....1..gws-wiz.......35i39.yu0YE6lnCms')
soup = BeautifulSoup(response.content, 'html.parser')

tomorrow_weather = soup.find('span', {'id': 'wob_dc'}).text

但是这个代码失败了，错误是：

Traceback (most recent call last):
  File "C:\Users\sungn_000\Desktop\weather.py", line 23, in <module>
    tomorrow_weather = soup.find('span', {'id': 'wob_dc'}).text
AttributeError: 'NoneType' object has no attribute 'text'

请解决此错误。

Answer 1

这是因为天气部分是由浏览器通过JavaScript呈现的。因此，当您使用requests时，您只能获得没有所需内容的页面的HTML内容。如果要使用Web浏览器呈现的元素解析页面，则应使用selenium（或requests-html）。

from bs4 import BeautifulSoup
from requests_html import HTMLSession
session = HTMLSession()
response = session.get('https://www.google.com/search?hl=en&ei=coGHXPWEIouUr7wPo9ixoAg&q=%EC%9D%BC%EB%B3%B8%20%E6%A1%9C%E5%B7%9D%E5%B8%82%E7%9C%9F%E5%A3%81%E7%94%BA%E5%8F%A4%E5%9F%8E%20%EB%82%B4%EC%9D%BC%20%EB%82%A0%EC%94%A8&oq=%EC%9D%BC%EB%B3%B8%20%E6%A1%9C%E5%B7%9D%E5%B8%82%E7%9C%9F%E5%A3%81%E7%94%BA%E5%8F%A4%E5%9F%8E%20%EB%82%B4%EC%9D%BC%20%EB%82%A0%EC%94%A8&gs_l=psy-ab.3...232674.234409..234575...0.0..0.251.929.0j6j1......0....1..gws-wiz.......35i39.yu0YE6lnCms')
soup = BeautifulSoup(response.content, 'html.parser')

tomorrow_weather = soup.find('span', {'id': 'wob_dc'}).text
print(tomorrow_weather)

输出：

pawel@pawel-XPS-15-9570:~$ python test.py
Clear with periodic clouds

Answer 2

>>> from bs4 import BeautifulSoup
>>> soup = BeautifulSoup(a)
>>> a
'<div id="wob_dcp">\n    <span class="vk_gy vk_sh" id="wob_dc">Clear with periodic clouds</span>    \n</div>'
>>> soup.find("span", id="wob_dc").text
'Clear with periodic clouds'

试试吧。