How to know a top directory?

[Fredrik Lundh]

Michiel Overtoom wrote:

>> I have path "/this/is/path" and I wanna get "/this/is".
>> Also I want to use it as platform independent. If I want to pass "c:
>> \that\path" then I need to get "c:\that".
> 
> import os
> print os.path.split("/home/user/motoom")[0]
> print os.path.split("c:\\prj\\techniques\\python")[0]

in this case, os.path.dirname() is more convenient.

</F>