tkinter text widget question

[William Gill]

The tkinter text widget uses indexes to identify row:column offsets 
within the text, but it seems counter intuitive to have to convert row 
and column integers to a string like "0.1'.  It's great that index can 
take a string, but what about looping through rows and columns?  Am I 
missing a way to use integers directly, or should I create a class that 
takes the two integers and returns them formatted as the proper string?

Thanks

Bill