All the unnecessary lines of the Python System Back-Testing Module have been hidden.  Only the lines that you need to develop the next great algorithm are included.  Reads sort  of like English.  This snippet introduces you to the use of functions and lists – two major components of the Python language.  If you buy my latest book – “The Ultimate Algorithmic Trading System Toolbox” then simply email me or sign up through the contact form and you will get version 2.0 for free!