Nested Imports

[CanadaGuy]

I'm trying to create modules for my application that are themselves testable on their own. I would like to have the following directory structure:

\application.py
\support\module1.py
\support\module2.py

application.py depends on both module1.py and module2.py.
module1.py is also dependent directly on module2.py

My way to make this work so far is the following in module1.py

if __name__ == "__main__":
    import module2
else:    
    import support.module2

Without that, I get various "module not found" issues. I did a lot of reading on absolute and relative imports, but I can't identify my case among the many examples presented. My alternative plan was to leave everything flat for now (no directories) so that imports are nice and straightforward. But for a larger application, I know this would just make a big mess.

Ideas?