It looks like maybe Python isn't installed on your device...

In X Terminal, if you do this:

Code:

Nokia-N900:~# python

you should get this:

Code:

Nokia-N900:~# python
Python 2.5.4 (r254:67916, May 17 2010, 21:00:32)
[GCC 4.2.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

Use Ctrl + D to quit Python.