Joining two absolute paths in python

Let’s join two absolute paths using the os module of python:

>>> import os
>>> os.path.join('/home/arfs6', '/proj')  # Expecting /home/arfs6/proj
'/proj'
>>>

This was unexpected to me. I tried solving it by converting the second path to a relative path, and here is what i got:

>>> os.path.relpath('/proj')
'../../../proj'
>>> 

Looks like python is been too smart here. Just do what I asked you, nothing more, nothing less!

At this point, I don’t know what to do. I don’t want to resolve to string manipulation for paths.