How to include script library

You can use 'install' utility function( or any other function and variable defined in SConstruct) in your application's build.py.

The benefit of using install is that it also compiles your python files to byte-code if you have enabled it.

Example:
I have a 'mylibs' folder in applications/helloworld/. The mylibs folder contains __init__.py and mylibrary.py. The helloworld's build.py looks like this:
-------
import os
from os.path import dirname, abspath, join
import glob

# Install mylib to library folder
# APPLICATION_PATH from SConstruct
libdir = join( APPLICATION_PATH, "mylib/*.py" )
files = glob.glob( libdir )
install( SISNAME_PYTHON_MAIN, files, join( PATH_PY_LIBS, "mylib") )

Application("helloworld")
-------

At the end it should say:
...
Install file: "applications\helloworld\mylib\mylibrary.py" as "M:\epoc32\winscw\c\PythonCommunity\mylib\mylibrary.py"
Install file: "applications\helloworld\mylib\__init__.py" as "M:\epoc32\winscw\c\PythonCommunity\mylib\__init__.py"
...
And when building with GCCE it should be found in the PythonCommunity.pkg( or whatever your's is :)
...
"gcce_urel\packages\PythonCommunity.sis\PythonCommunity\mylib\__init__.py" - "!:\PythonCommunity\mylib\__init__.py"
"gcce_urel\packages\PythonCommunity.sis\PythonCommunity\mylib\mylibrary.py" - "!:\PythonCommunity\mylib\mylibrary.py"
...