Import issue in python packages

[Venkatesh Adiga]

Hi All,

I am facing issue with python package import.
In my project, I have many directories with different python classes
defined within them. I am trying to import those classes in another python
program, but not able to import them.
Here are my directories and file structures.
  src/platform/operatingsys.py : Defined OperatingSystem Class
  src/platform/ipc.py : Defined IPC class
  src/platform/MyThread.py: Defined MyThread class
  src/platform/__init__.py - zero sized file

  src/utils/abc.py
  src/utils/def.py
  src/utils/__init__.py

  src/api/xyz.py
  src/api/__init__.py

  src/unittest/TestSuite.py - Defined UnitTest Class
  src/unittest/__init__.py
  src/__init__.py


Now, I am trying to use the above classes in another python program(
TestPackage.py) as below:


*from src.platform.operatingsys import OperatingSystem*
.....
--------------
Execution of TestPackage.py throws an error as below

 ImportError: No module named 'src'

Currently I have a working code which prefixes sys.path with every
directory defined in the package list before import any classes.

sys.path.append("src/unittest/")
import OperatingSystem

But I do not have the hard-coded path and append to sys.path variable.
So my question is:
1)  Is there any better way of having the sys.path variable appended by
directory listing?
2)  What changes i need to do so that my import statement looks like below:
       *from src.platform.operatingsys import OperatingSystem*

Please suggest...

Thanks
Venkat