Python 3 - 无法使用 re 库打印

Question

我有这个代码：

import requests
from bs4 import BeautifulSoup
import re


url = "http://www.rockefeller.edu/research/areas/summary.php?id=1"
r = requests.get(url)
soup = BeautifulSoup(r.content, 'html.parser')
for x in (soup.find_all(string=re.compile('comment'))):
    print(x.parent)
    print(x.parent.name)

当我听说它应该打印 <a href="/about/comments">Comments</a> 和 a 时，它什么也没打印出来我正在使用：
请求：2.7.0
beautifulsoup4: 4.4.0
Python : 3.4.3
运行在 python 空闲：Macbook Pro

Answer 1

re.compile() 默认区分大小写匹配。您必须设置标志 re.I 以使其不区分大小写。请参阅以下演示示例：

import requests
from bs4 import BeautifulSoup
import re


url = "http://www.rockefeller.edu/research/areas/summary.php?id=1"
r = requests.get(url)
soup = BeautifulSoup(r.content, 'html.parser')

for x in (soup.find_all(True,text=re.compile(r'comment', re.I))):
    print(x)

输出：

<a href="/about/comments">Comments</a>

Python 3 - 无法使用 re 库打印

Python 3 - Can't print using the re library

beautifulsoup

python-3.x

python-requests