[Python]Install python urllib 2

I wrote code of a programming book.
urllib2 is needed for the code, but I couldn’t find urllib2 at pip.
So I tried to install urllib3.

$sudo apt-get install python-pip
$sudo pip install urllib3
$python
>>> import urllib3
>>> http = urllib3.PoolManager()
>>> print http.request('GET', 'http://www.google.com').data

There are some diifferences.
But, we can use same way because differences are little bit.