Functions | Intro to CS - Python | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now with our Intro to Computer Science - Python course!

How can we reuse a code routine over and over again? Learn how to use functions to package a block of code and parameters to generalize it. Learn how to write your own function definitions, and explore how the computer executes a function call. View the program used in this video at: https://www.khanacademy.org/python-program/health-potions/4851312333602816

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 - 00:16 : code duplication
00:17 - 00:43 : what is a function?
00:44 - 01:10 : function inputs and outputs
01:11 - 02:24 : function definition syntax
02:25 - 03:17 : calling a function
03:18 - 03:54 : refactoring a program into functions
03:55 - 04:41 : why use functions?
...
https://www.youtube.com/watch?v=UmNKiV7Lekk
Note: All Khan Academy content is available for free at (www.khanacademy.org)