Newbie - instanciating classes from other files

[comanighttrain at gmail.com]

Hey guys, i just started learning python (i usually use java/C).

this has got me stumped as its not mentioned in the documentation
(unless im skimming it every time).

How does one instanciate a class from another file

i thought it would be
-----------------------------------code---------------------------
import file.py

thisFile = ClassName()
-------------------------------not code---------------------------
but its not

and its not
-----------------------------------code---------------------------
thisFile= filename.ClassName()
-------------------------------not code---------------------------
im stuck:( 

cheers 
dave