python newbie question

Hi guys,
I know your not the pthyon group but the gnue group.  But I intend to 
use the gnue forms, etc to get my work done.  I have just finished two 
books on Python and have a question or two.

1.  I didn't see where either of the books discussed printing.  So how 
does printing occur on a Linux box and a windows box?
2. A little longer:  in the books they connected to MySQL  and used 
cursors.  But I have postgres on a SUSE 9.0 linux - it uses "pg".  It 
appears that "pg" does not have a cursor method/function -  is this 
right?  If it is right - how do I see rows in the results from a query?  
Next but not least in the book they always had a single sql statement 
and filled the cursor.  But how do you handle the classic invoice header 
and line items in one cursor.  Is it possible to make several 
cursor/querys and then use the results?  But if  I have to make two 
query calls does that mean I need two connections?  If not how does the 
fetchnext() work with only one connection and two querys?

Thanks all
John