The urlparse in Python 2.7.11 was renamed to urllib.parse in Python 3. So, if you have a code such from urlparse import urljoin, I suggest you change it to from urllib.parse import urljoin

As noted in urlparse's documentation:

Note The urlparse module is renamed to urllib.parse in Python 3. The 2to3 tool will automatically adapt imports when converting your sources to Python 3.

I.e., just use urllib.parse instead:

import urllib.parse