[Tutor] omit some keys from dict

[Sean 'Shaleh' Perry]

> 
> I just noticed that I am running 2.2 on my machine.  Does that mean that 
> I need to worry about importing modules, etc?  I didn't realize that 
> they are dependent on the version of Python used.
> 
> Clearly I am out of my league here... is there a FAQ on the subject of 
> 1.x vs 2.x Pythons?
> 

modules written in pure python move forward from 1.x just fine 9 times out of
10.  The reverse is 1 out of 10 when moving back to 1.x.

The real problem are the modules written in C.