How to accomplish relative import in python

Question

stuff/     __init__.py     mylib.py     Foo/         __init__.py         main.py         foo/             __init__.py             script.py 

script.py wants to import mylib.py

This is just an example, but really I just want to do a relative import of a module in a parent directory. I've tried various things and get this error...

Attempted relative import beyond toplevel package

I read somewhere that the script from where the program starts shouldn't in the package, and I tried modifying the structure for that like so...

stuff/     mylib.py     foo.py // equivalent of main.py in above     foo/         __init__.py         script.py 

but got same error.

How can I accomplish this? Is this even an adequate approach?

Edit: In Python 2

Answer 1

After fiddling with it a bit more, I realized how to set it up, and for the sake of specificity I won't use foo bar names. My project directory is set up as...

tools/     core/         object_editor/             # files that need to use ntlib.py             editor.py # see example at bottom             __init__.py         state_editor/             # files that need to use ntlib.py             __init__.py         ntlib.py         __init__.py # core is the top level package     LICENSE     state_editor.py # equivalent to main.py for the state editor     object_editor.py # equivalent to main.py for the object editor 

A line in object_editor.py looks like...

from core.object_editor import editor 

A line in editor.py looks like...

from .. import ntlib 

or alternatively

from core import ntlib 

The key is that in the example I gave in the question, the "main" script was being run from within the package. Once I moved it out, created a specific package (core), and moved the library I wanted the editors to share (ntlib) into that package, everything was hunky-dory.