Question

我有这段代码：

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，它什么都没打印出来我正在使用：
要求：2.7.0
beautifulsoup4：4.4.0
Python：3.4.3
在python上运行Idle：Macbook Pro

Answer 1

默认情况下，

re.compile()区分大小写。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库进行打印

1 个答案: