Author: Khan Academy via YouTube
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What happens when a function calls another function? Trace how the computer uses stack frames to keep track of each function call’s state. Explore how breaking down a big function into several smaller functions can improve readability and reusability. View the program used in this video at: https://www.khanacademy.org/python-program/intruder-detection/6531095526293504

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Course link: https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions
Course playlist: https://www.youtube.com/playlist?list=PLSQl0a2vh4HDkbhG0sDW0b-VZXykEIAe5

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TIMESTAMPS:
00:00 – 00:21 : function execution review
00:22 – 01:21 : tracing a nested function call
01:22 – 01:55 : managing multiple stack frames
01:56 – 02:34 : game setup – intruder detection!
02:35 – 03:42 : why not use one big function?
03:43 – 04:51 : breaking down into smaller functions
04:52 – 05:25 : decoupling the detection check
05:26 – 06:23 : reusing function building blocks

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