Basic openerp module directory structure:-
In OpenErp all module of openerp server are located in the server/addons directory and creates all new module in openerp, to do this follow this step:-

• first step is, create a subdirectory in the server/addons directory.
• second step is, create module description __openerp__.py file.
• third step is, create the python file containing the all object.
• fourth step is, create .xml file that download data like view, menu, entries, demo, data etc.
• fifth step is optional step, create report, wizards, workflows.

Python Module Descriptor File __init__.py:-
The __init__.py file in openerp is to executed at the start of the program.this file needs to import the python
files that need to be loaded.
Example:-
If you create a "module.py" file, containing the description of your objects, you have to write one line in
__init__.py:
import module