About this Project¶ This interactive book is a product of the Runestone Interactive Project at Luther College, led by Brad Miller and David Ranum. There have been many contributors to the project. Our thanks especially to the following: This book is based on the Original work by: Jeffrey Elkner, Allen B. Downey, and Chris Meyers Activecode based on Skulpt Codelens based on Online Python Tutor Many contributions from the CSLearning4U research group at Georgia Tech. ACM-SIGCSE for the special p...