Please be informed that the urllib3 is a separate library from urllib and urllib2. It has lots of new highlights to the urllibs in the standard library, if you want them, things like re-using connections.
If you want to work with urllib3, you'll need to install it through pip install urllib3. A basic example looks like this:
from bs4 import BeautifulSoup
import urllib3
http = urllib3.PoolManager()
url = 'http://www.thefamouspeople.com/singers.php'
response = http.request('GET', url)
soup = BeautifulSoup(response.data)
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