You need that root and root/module2 be in sys.path which can be done like this in somescript :
rootpath = os.path.dirname(os.path.abspath(os.curdir))
mod2path = os.path.join(rootpath,'module2')
Of course you also need to be sure that all these things exist; it would be nice not to double add them (doesn't actually hurt) to sys.path; and other niceties. You may want to create an empty file named __init__.py in the various directories. See http://effbot.org/pyfaq/what-is-init-py-used-for.htm.
I'm not a fan of, for example from canvas import point because I've spent far too much of my time dealing with subtle bugs introduced by, for example, from coastline import point in the same chunk of code. (Mostly, I admit, not in Python). I just like the self documentation and safety of seeing for example