I just wanna know about os.path module..

[kimes]

I've just started digging into how python works..
I found that other mudules are clearly declared like one file per a
module..

But the only os.path doesn't have their own file..
ye I know is has actually depending on os like in my case posixpath..

What I'd love to know is..
when I call import os.path..
how happened under the hood?

I'm currently using python 2.4 in linux machine..
I'd appreciate it