Relative Imports

Scott David Daniels scott.daniels at acm.org
Wed Jul 18 03:51:55 CEST 2007


Pat O'Hara wrote:
> Hey guys, I know this is a really stupid question, but I've tried 
> googling and nothing came up. I also tried IRC, but it was too crowded 
> and I didn't get much useful information.
> 
> I'm using Python 2.5 on WinXP, and I'm trying to do a relative import. 
> Here's the package structure
> 
> A/
>   __init__.py
>   aneededmodule.py
>   [some more modules]
>   B/
>      __init__.py
>      anothermodule.py
> 
> anothermodule.py needs to use aneededmodule.py; package A's __init__.py 
> looks like this:
> 
> from aneededmodule import somestuff
> 
> My problem is that when anothermodule tries to import ..aneededmodule or 
> ..somestuff (because somestuff was imported into __init__), I get a 
> ValueError: Attempted relative import in non-package.
> 
> What's my problem? This seems like something very trivial, but I've 
> never had to use python for a project of this size before, so I've never 
> dealt with this.
> 
> Thanks for your help,
> -Pat
My guess (without seeing your code or error messages; shame on you) is
that you are running A/B/anothermodule.py; not -m A.B.anothermodule

-- 
--Scott David Daniels
scott.daniels at acm.org



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