Скачать или смотреть 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.

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Course link: https://www.khanacademy.org/computing...
Course playlist:    • Intro to Computer Science - Python | Khan ...  

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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