使用 BeautifulSoup 和 Python 获取元标记内容属性
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Get meta tag content property with BeautifulSoup and Python
提问by the_t_test_1
I am trying to use python and beautiful soup to extract the content part of the tags below:
我正在尝试使用python和beautiful soup来提取以下标签的内容部分：
<meta property="og:title" content="Super Fun Event 1" />
<meta property="og:url" content="http://superfunevents.com/events/super-fun-event-1/" />
I'm getting BeautifulSoup to load the page just fine and find other stuff (this also grabs the article id from the id tag hidden in the source), but I don't know the correct way to search the html and find these bits, I've tried variations of find and findAll to no avail. The code iterates over a list of urls at present...
我让 BeautifulSoup 加载页面并找到其他东西（这也从隐藏在源代码中的 id 标签中获取文章 ID），但我不知道搜索 html 并找到这些位的正确方法，我尝试了 find 和 findAll 的变体，但无济于事。该代码目前遍历一个 url 列表......
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#importing the libraries
from urllib import urlopen
from bs4 import BeautifulSoup
def get_data(page_no):
webpage = urlopen('http://superfunevents.com/?p=' + str(i)).read()
soup = BeautifulSoup(webpage, "lxml")
for tag in soup.find_all("article") :
id = tag.get('id')
print id
# the hard part that doesn't work - I know this example is well off the mark!
title = soup.find("og:title", "content")
print (title.get_text())
url = soup.find("og:url", "content")
print (url.get_text())
# end of problem
for i in range (1,100):
get_data(i)
If anyone can help me sort the bit to find the og:title and og:content that'd be fantastic!
如果有人能帮我整理一下以找到 og:title 和 og:content 那就太棒了！
回答by alecxe
Provide the metatag name as the first argument to find(). Then, use keyword arguments to check the specific attributes:
提供meta标记名称作为 的第一个参数find()。然后，使用关键字参数检查特定属性：
title = soup.find("meta", property="og:title")
url = soup.find("meta", property="og:url")
print(title["content"] if title else "No meta title given")
print(url["content"] if url else "No meta url given")
The if/elsechecks here would be optional if you know that the title and url meta properties would always be present.
如果您知道 title 和 url 元属性将始终存在，则此处的if/else检查将是可选的。
回答by Hackaholic
try this :
尝试这个 ：
soup = BeautifulSoup(webpage)
for tag in soup.find_all("meta"):
if tag.get("property", None) == "og:title":
print tag.get("content", None)
elif tag.get("property", None) == "og:url":
print tag.get("content", None)
