如何使用Python BS4访问HTML <p>标签中的文本

Question

所以这是我的HTML：

我怎样才能访问＆＃34; CTS PAC即将到期。＆＃34;特别是在beautifulsoup中使用＆＃34; find_all＆＃34;命令？

Answer 1

from bs4 import BeautifulSoup

html = '''
<p>
    <strong>123</strong>
    A CTS PAC is nearing its expiration date
</p>
'''

soup = BeautifulSoup(html, 'html.parser')

p = soup.find('p')

text = list(p.children)[-1]

print(text.strip())

如果你有更多<p>

from bs4 import BeautifulSoup

html = '''
<p>
    Other p-tag
</p>
<p>
    <strong>123</strong>
    A CTS PAC is nearing its expiration date
</p>
'''

soup = BeautifulSoup(html, 'html.parser')

all_p = soup.find_all('p')


text = list(all_p[1].children)[-1]

print(text.strip())

Answer 2

我相信这个HTML来自cisco.com网站。如果是这样，这里就是您问题的直接答案。

>>> url = 'https://www.cisco.com/c/en/us/td/docs/security/asa/syslog/b_syslog/syslogs10.html'
>>> import bs4
>>> import requests
>>> page = requests.get(url).content
>>> soup = bs4.BeautifulSoup(page, 'lxml')

首先，我尝试寻找朴素的字符串。但是，经过对页面的仔细检查，我注意到了一些尾随空白。

>>> near = soup.find_all(string='A CTS PAC is nearing its expiration date')
>>> near
[]

使用正则表达式可以在源页面中搜索带有尾随空白的字符串。

>>> near = soup.find_all(string=bs4.re.compile('A CTS PAC is nearing its expiration date'))
>>> near
['A CTS PAC is nearing its expiration date.\n\t ']