I can use urllib.request module with Python 3.1. But when I execute the same program using Python 2.7, an error comes along the lines of;
AttributeError: \'module
use urllib2.urlopen
It is also possible to use six module to make code for both python2 & python3:
from six.moves import urllib
# ...
result = urllib.request.urlopen(url)
Take a look at http://docs.python.org/library/urllib2.html.
The urllib2 module is the predecessor to urllib.request/urllib.error (it has been split into those modules in Python 3.0).