How to join absolute and relative urls?

Question

I have two urls:

url1 = \"http://127.0.0.1/test1/test2/test3/test5.xml\"
url2 = \"../../test4/test6.xml\"

How can I get an absolute url for

Answer 1

>>> from urlparse import urljoin
>>> url1 = "http://www.youtube.com/user/khanacademy"
>>> url2 = "/user/khanacademy"
>>> urljoin(url1, url2)
'http://www.youtube.com/user/khanacademy'

Simple.