python - Importing files from different folder

I have the following folder
structure.

application/app/folder/file.py

and
I want to import some functions from
file.py in another Python file which
resides
in

application/app2/some_folder/some_file.py

I've
tried

from
application.app.folder.file import
func_name

and some other various
attempts but so far I couldn't manage to import properly. How can I do
this?