Minimal debug/rep functionality

[Mark]

Hello all,

In a nutshell, what I'd like to do is develop a utility that would print out 
every line in a python program as the program executes (I may even just 
want to print line numbers).  I can see hints of how to do this in pdb (and 
more directly in the underlying bdb class) and also in the code module.

So, 

1) Should I try and inherit a class and override some methods or should I 
just pull out the relevant code and hand spin a small interpreter.

2) Anyone have a 20 liner solution for this?

Thanks.

Regards,
Mark