What you need for this book

There is a lot of debate going on between Python 2.x and Python 3.x. While we believe that the world is moving forward with better versions coming out, a lot of developers still enjoy using Python 2.x. A lot of operating systems have Python 2.x built into them. This book is focused on machine learning in Python as opposed to Python itself. It also helps in maintaining compatibility with libraries that haven't been ported to Python 3.x. Hence the code in the book is oriented towards Python 2.x. In that spirit, we have tried to keep all the code as agnostic as possible to the Python versions. We feel that this will enable our readers to easily understand the code and readily use it in different scenarios.