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To close out this chapter, I want to show the implementations of the two GUIs used to run major book examples. The following GUIs, PyDemos and PyGadgets, are simply GUIs for launching other GUI programs. In fact, we've now come to the end of the demo launcher story: both of the programs here interact with modules that we met earlier in Chapter 8 and Chapter 3:
launchmodes.py starts independent Python programs portably.
Launcher.py finds programs, and ultimately runs both PyDemos and PyGadgets when used by the self-configuring top-level launcher scripts.
LaunchBrowser.py spawns web browsers.