Why use uritools instead of the standard library urllib?

[pombredanne]

Why use uritools instead of the standard library urllib? Are there specific cases that really demand adding an extra dependency? It seems barely used https://github.com/search?q=repo%3Aspdx%2Ftools-python+uritools+language%3APython&type=code&l=Python and it would be best to avoid adding an extra dependency for such a small benefit.