Presented by: Van Lindberg.,Friday morning keynote.,Python is a spectacular success - far more than anyone, even Guido, would have anticipated 20 years ago. Python is preinstalled on almost every operating system, is becoming the lingua franca for many numeric, statistical, and big data problems, and is the default teaching language in many colleges and universities.,But our success does not hide the warning signs. Javascript, Julia, Java, Lua, and Go are all picking up speed and mindshare, frequently at th