conditional import into global namespace

[mk]

Jerry Hill wrote:
> Just import subprocess at the top of your module.  If subprocess
> hasn't been imported yet, it will be imported when your module is
> loaded.  If it's already been imported, your module will use the
> cached version that's already been imported.
> 
> In other words, it sounds like Python already does what you want.  You
> don't need to do anything special.

Oh, thanks!

Hmm it's different than dealing with packages I guess -- IIRC, in 
packages only code in package's __init__.py was executed?

Regards,
mk