Programming with Sage: defining module

Question

Let's say I want to write two modules 'addition.sage' and 'result.sage'.
I would like to import 'addition.sage' in 'result.sage'. How can I do this?
I've try the following, but it doesn't seem to work.

'addition.sage' file:
from sage.all import *
add(x,y)=x+y

'result.sage' file:
from addition import add
print add(1,2)

my sage session:
sage: load('myPath/result.sage')

This gives me the error 'ImportError: No module named addition'.
Although, my PYTHONPATH contains the directory where my two modules are located.

Accepted Answer

If result.sage is calling add function from addition.sage, you need to load that file in result.sage.

You can also load the file without giving the path, if you type the following two lines in the beginning of the notebook

import sys
sys.path.append('path-to-module')

@Shashank Thanks Shashank.
Nicolas Essis-Breton (Dec 21 '11)

Programming with Sage: defining module

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