CSC-121, Graphical Python Programming, Creating and Running Threads using Qt's QThreadPool

Lecture covering the creation of a PyQt5 graphical application that implements threading using the QThreadPool object to run multiple threads from the PyQt5 GUI application event loop. Also covered is the creation of a watchdog thread to monitor threads. Lastly a generic for loop is implemented to illustrate how the GUI application event loop can be blocked by tasks that are not threaded.