我试图从新闻网站下载文字。 HTML是:
<div class="pane-content">
<div class="field field-type-text field-field-noticia-bajada">
<div class="field-items">
<div class="field-item odd">
<p>"My Text" target="_blank">www.injuv.cl</a></strong></p> </div>
输出应为:My Text 我使用以下python代码:
try:
from BeautifulSoup import BeautifulSoup
except ImportError:
from bs4 import BeautifulSoup
html = "My URL"
parsed_html = BeautifulSoup(html)
p = parsed_html.find("div", attrs={'class':'pane-content'})
print(p)
但代码的输出是:&#34;无&#34;。你知道我的代码有什么问题吗?
答案 0 :(得分:2)
问题是你没有解析HTML,你正在解析URL字符串:
html = "My URL"
parsed_html = BeautifulSoup(html)
相反,您需要首先获取/检索/下载源,例如Python 2中:
from urllib2 import urlopen
html = urlopen("My URL")
parsed_html = BeautifulSoup(html)
在Python 3中,它将是:
from urllib.request import urlopen
html = urlopen("My URL")
parsed_html = BeautifulSoup(html)
或者,您可以使用第三方“for human”-style requests
library:
import requests
html = requests.get("My URL").content
parsed_html = BeautifulSoup(html)
另请注意,您根本不应使用BeautifulSoup
版本3 - 它不再维护。替换:
try:
from BeautifulSoup import BeautifulSoup
except ImportError:
from bs4 import BeautifulSoup
只是:
from bs4 import BeautifulSoup
答案 1 :(得分:0)
BeautifulSoup
接受一串HTML。您需要使用URL从页面检索HTML。
查看urllib以发出HTTP请求。 (或requests以更简单的方式。)检索HTML并将 传递给BeautifulSoup
,如下所示:
import urllib
from bs4 import BeautifulSoup
# Get the HTML
conn = urllib.urlopen("http://www.example.com")
html = conn.read()
# Give BeautifulSoup the HTML:
soup = BeautifulSoup(html)
从这里开始,只需按照之前的尝试进行解析。
p = soup.find("div", attrs={'class':'pane-content'})
print(p)