我正在尝试从具有 url 列表的网页获取 url。我不想获取所有网址,只想获取文本与列表中字符串文本匹配的网址。字符串列表是网页上链接文本的子集,是我通过抓取页面并删除不需要的文本来提取的。我有一个存储在文件名
中的字符串列表。
我正在尝试提取列表中包含字符串的链接。下面返回一个空列表
r = requests.get(url)
soup = BeautifulSoup(r.content, 'html5lib')
links = soup.findAll('a', string = filenames[0])
file_links = [link['href'] for link in links if "export" in link['href']]
标签看起来像这样:
<p><a href="https://drive.google.com/uc?export=download&id=1wVjbdN9fztrjxhONGRX5U6N1OJDAChOi">
ECZ Mathematics Paper 2 2019.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=1x_9E3PaviCuSsqfJqOsQKOwVlCWZ1jqf">
ECZ Mathematics Paper 1 2019.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=1QFOzpPLuQPup8FtKgOoIcvzTnzCaRzUp">
ECZ Science Paper 3 2009.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=0B0lFc6TrfIg7aENYc1V6akRVVnc">
ECZ Civic Education Paper 2 2009.</a></p>
我想获取前三个的 href 链接,但不是最后一个,因为字符串 'ECZ Civic Education Paper 2 2009.'
不是我的字符串列表的一部分。网站链接为 here
我的字符串列表如下所示:
filenames = ['ECZ Mathematics Paper 2 2019.', 'ECZ Mathematics Paper 2 2019.',
'ECZ Science Paper 3 2009.']
我只想要前三个链接,因为链接的文本在我的列表(文件名)中。我不需要第四个链接,因为 href 链接旁边的文本 (ECZ Civic Education Paper 2 2009.) 不在我的列表中,因为我不想下载此文件。
最佳答案
尝试一下这个方法,看看是否有效:
html = """
<p><a href="https://drive.google.com/uc?export=download&id=1wVjbdN9fztrjxhONGRX5U6N1OJDAChOi">
ECZ Mathematics Paper 2 2019.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=1x_9E3PaviCuSsqfJqOsQKOwVlCWZ1jqf">
ECZ Mathematics Paper 1 2019.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=1QFOzpPLuQPup8FtKgOoIcvzTnzCaRzUp">
ECZ Science Paper 3 2009.</a></p>
<p><a href="https://drive.google.com/uc?export=download&id=0B0lFc6TrfIg7aENYc1V6akRVVnc">
ECZ Civic Education Paper 2 2009.</a></p>
"""
filenames = ['ECZ Mathematics Paper 2 2019.', 'ECZ Mathematics Paper 2 2019.',
'ECZ Science Paper 3 2009.']
soup = bs(html, 'html5lib')
all_links = soup.findAll('a')
for link in all_links:
for nam in filenames:
if link.text.strip()==nam:
print(link['href'])
输出:
https://drive.google.com/uc?export=download&id=1wVjbdN9fztrjxhONGRX5U6N1OJDAChOi
https://drive.google.com/uc?export=download&id=1wVjbdN9fztrjxhONGRX5U6N1OJDAChOi
https://drive.google.com/uc?export=download&id=1QFOzpPLuQPup8FtKgOoIcvzTnzCaRzUp
关于python - 获取与 Beautiful Soup 的字符串列表中的字符串匹配的 HTML href 链接,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59620715/