Zelle, John M..
Python programming: an introduction to computer science /
Zelle, John M., Wartburg College 
. - 2nd edition 
. - Sherwood : Franklin, Beedle & Associates Inc.,  2010 
. - 514 p.  ill., tab., schem.  23 cm. 
<br/><label>  ISBN: </label>978-1-59028-241-0