creating a module

[Andrei Kulakov]

In article <3CA87B34.CF1128F7 at ecn.purdue.edu>, Christopher N. Deckard wrote:
> I'm having some difficulties making my python module available to
> other programs besides itself.
> 
> Say I have a module called Thinger, and a basic file layout like:
> 
> Thinger (a directory)
>        |- Thinger.py
>           from Thinger_definitions import *
>           from Commands.Command import Command
>           from Commands.Command1 improt Command1
>           class Thinger:
>             methods...
> 
>        |-  Thinger_definitions.py (global definitions for Thinger 
>                                    services.  Every other file has
>                                    import * from
> Thinger_definitions)
> 
>        |-  ThingerConnection.py (handles connections to a server)
>            class ThingerConnection:
>               methods...
> 
>        |-  Commands (a directory)
>                    |- Command.py (base command class)
>                       from Thinger_definitions import *
>                       class Command:
>                         methods...
>                    |- Command1.py
>                       from Thinger_definitions import *
>                       class Command1(Command):
>                         methods...
> 
> If I create a script in the Thinger directory, which uses the
> Thinger class, then everything works fine.  If I make a script
> outside of Thinger (parent directory) and do something like
> 
> test_script:
>   from Thinger.Thinger import Thinger
>   my_thing = Thinger()
> 
> Then this fails when the files in the Command directory try to
> import Thinger_definitions.
> 
> Really, what I'd like to do is to be able to say in Thinger.py
> 
> from Commands import *
> 
> and that would import all of the Commands that were in there and
> make them directly useable as Command(), Command1(), etc.
>
Set PYTHONPATH env variable to the list of directories you want to
import modules from.

> 
> Another question along these lines is what shouls go in the
> __init__.py script in each directory?  Right now I just have the
> keyword 'pass' and that seems to do fine for most things.
> 
> Thanks,
> -Chris
> 
> P.S.  If you could, please send mail to me as well as the group.


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