Python BeautifulSoup 4 文档中给出的示例

Question

I am learning the BeautifulSoup 4 Documentation, and want to exercise the examples given.

I am trying the examples however it's not successful. An example below.

It seems I am not putting it in the right way, and problem lies in the 'url'. What is the right way to put them?

from bs4 import BeautifulSoup
import re
import urllib2


url = '<a class="sister" href="http://example.com/elsie" id="link1">Elsie</a>'

page = urllib2.urlopen(url)
soup = BeautifulSoup(page.read())

Learning = soup.find_all("a", class_="sister")

print Learning

Answer 1

'<a class="sister" href="http://example.com/elsie" id="link1">Elsie</a>' is not an url.

The code contains html; You don't need to use urllib2.urlopen .

from bs4 import BeautifulSoup

page = '<a class="sister" href="http://example.com/elsie" id="link1">Elsie</a>'
soup = BeautifulSoup(page)
Learning = soup.find_all("a", class_="sister")
print Learning