Functions in Python | Khan Academy - Functions in Python (FULL UNIT) | Intro to CS - Python | Khan Academy

How do teams of programmers continuously write and revise code without breaking things? Learn how to break down programs into smaller, independent functions that can be easily read, reused, and tested. Design and write function definitions with parameters and return values as you develop your own game components. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now with our Intro to Computer Science - Python course! 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 Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc TIMESTAMPS: 00:00 : games & modularity 04:04 : function definitions 08:47 : tracing function calls 14:21 : local & global scope 19:17 : nested function calls 25:41 : program design - deck of cards 31:06 : creating modules 35:33 : program design - Nim game 41:28 : unit testing 46:14 : debugging with test cases