[Tutor] Re: newbie question on sys.path.append()

[Lee Harr]

as the program I am working on grows, I would like to store some of the
modules that are imported
>in the main program file in a separate subdirectory and add the 
>subdirectory to sys.path.
>I used sys.path.append() for this at the very beginning of this file,
>like:
>
>#!/usr/bin/env python
>from Tkinter import *
>import tkMessageBox, tkSnack, sys, os, fileinput, Tix
>sys.path.append(os.path.join(sys.path[0], 'widgets'))
>
>so I can import the modules I stored in the "widgets" subdirectory.
>
>I am not sure now if this might cause problems, maybe there is a more 
>proper way to import those
>modules.
>


Make your subdirectory a package by adding a file called __init__.py

Like this:

#foo/bar.py
x = 5


#baz.py
from foo import bar
print bar.x


$python baz.py
Traceback (most recent call last):
  File "baz.py", line 1, in ?
    from foo import bar
ImportError: No module named foo

$touch foo/__init__.py
$python baz.py
5

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