complete gui programs "pythonopen sourceand camarosthis concludes our look at building guis with python and its standard tkinter libraryby presenting collection of realistic gui programs in the preceding four we met all the basics of tkinter programming we toured the core set of widgets--python classes that generate devices on computer screen and respond to user events--and we studied handful of advanced gui programming techniquesincluding automation toolsredirection with sockets and pipesand threading hereour focus is on putting those widgets and techniques together to create more useful guis we'll studypyedit text editor program pyphoto thumbnail photo viewer pyview an image slideshow pydraw painting program pyclock graphical clock pytoe simple tic-tac-toe gamejust for funall of the larger examples in this book have py at the start of their names this is by convention in the python world if you shop around at toopyopengl ( python interface to the opengl graphics library)pygame ( python game development kit)and many more ' not sure who started this patternbut it has turned out to be more or less subtle way to advertise programming language preferences to the rest of the open source world pythonistas are nothing if not pysubtle