The writing of this book has been a great experience. I would like to thank Reza Rad for helping me initiate the writing process, and especially Régis Baccaro for joining me while the train was already moving. And just as important, I would like to thank my wife Merlijn and my sons Ruben, Jonathan, and Jasper for their support and for letting me write so often.
—Joost van Rossum
It has been a lot of rewarding work, mostly at night. This wouldn’t have been possible without the continuous support of my wife, Annette—you make every day a better day.