Propagate import for all modules in a package.

[Albert Hopkins]

On Fri, 2009-07-17 at 10:28 -0700, Phil wrote:
> I'm really new to Python and I am absolutely stumped trying to figure
> this out. I have searched plenty, but I am either searching for the
> wrong keywords or this isn't possible.
> 
> What I want to do is have one import be global for the entire package.
> Here is an example...
> 
> <package>
>   __init__.py
>   module1.py
>   module2.py
>   ...
>   moduleN.py
> 
> I was thinking that I could just, for example, 'from datetime import
> datetime' in __init__.py and have the ability to use 'datetime'
> anywhere in any of the modules in 'package'.
> 
> This didn't work for me. Did I just do something wrong? Is what I am
> trying to do possible?
> 

That's not how packages (were designed to) work.  A package is basically
a namespace.  It doesn't do anything special outside of providing a
namespace for common modules.  There are some special features (e.g.
__init__.py which is basically the "body" of the package and '__all__'
which handles wildcard imports of a package) but other than that it's
just a namespace.