even though you won' see shortcut keys used very often in this book due to platform differencesidle does support them the shortcut keys on your platform may differ from those shown in figure - idle comes with builtin key sets for windowsmacos xand unix you can choose any of these themes by clicking the small button next to the idle classic windows entry (see figure - you can also create your own custom theme that' based on another application you use figure - use shortcut keys that make the most sense to you as developer the general tabshown in figure - controls how idle works for exampleyou can tell idle to open python shell window (so that you can experimentor an edit window (so that you can write an applicationthe default is to open python shell window so that you can experiment with python and try new techniques you can also control whether idle prompts you to save files before running applications (always good idea in case the application causes the system to freezeand the size of the initial window when you create one paragraph formatting keeps your text from becoming too long to comfortably see in the window the defaults you see normally work just fineso there really isn' good reason to change them