deployed in some fashion by almost every organization writing software technical disagreements asidethat' been an exciting endeavor to be part of also want to thank my original editor at 'reillythe late frank willison this book was largely frank' idea he had profound impact on both my career and the success of python when it was newa legacy that remember each time ' tempted to misuse the word "only personal thanks finallya few more personal notes of thanks to the late carl saganfor inspiring an -year-old kid from wisconsin to my motherfor courage to my siblingsfor the truths to be found in museum peanuts to the book the shallowsfor much-needed wakeup call to my son michael and daughters samantha and roxannefor who you are ' not quite sure when you grew upbut ' proud of how you didand look forward to seeing where life takes you next and to my wife verafor patienceproofingdiet cokesand pretzels ' glad finally found you don' know what the next years holdbut do know that hope to spend all of them holding you --mark lutzamongst the larchspring preface