[web2py] How to create a module

[Vikram]

Hi

I am a newbie for web2py and migrated to python from php. I want to
create my own role based simple authentication system using python
decorators in web2py. When I create a folder myrole and import the
package in db.py (from myrole import *). Web2py throwing exception

Traceback (most recent call last):
  File "/home/vikram/Desktop/web2py/gluon/restricted.py", line 188, in
restricted
    exec ccode in environment
  File "/home/vikram/Desktop/web2py/applications/myapp/models/db.py",
line 8, in <module>
    from myrole import *
ImportError: No module named myrole

Can any one help on this issue

Thanks
Vikram