edX
edXCS50's Introduction to Programming with Python
175k studentsBEGINNEREnglish
Korshub's take
Learn Python by Building
CS50P strips away jargon and teaches Python through hands-on problem-solving. You'll move from basics—functions, loops, data types—to real patterns: exception handling, testing, classes, file operations. Each exercise draws from actual programming challenges, not toy problems. No installation required; code in your browser or locally. Whether you're pivoting careers, building a foundation, or exploring coding, Python's readability and practical reach make it the ideal starting language.
About this course
An introduction to programming using a language called Python. Learn how to read and write code as well as how to test and "debug" it. Designed for students with or without prior programming experience who'd like to learn Python specifically. Learn about functions, arguments, and return values (oh my!); variables and types; conditionals and Boolean expressions; and loops. Learn how to handle exceptions, find and fix bugs, and write unit tests; use third-party libraries; validate and extract data with regular expressions; model real-world entities with classes, objects, methods, and properties; and read and write files. Hands-on opportunities for lots of practice. Exercises inspired by real-world programming problems. No software required except for a web browser, or you can write code on your own PC or Mac.
Whereas CS50x itself focuses on computer science more generally as well as programming with C, Python, SQL, and JavaScript, this course, aka CS50P, is entirely focused on programming with Python. You can take CS50P before CS50x, during CS50x, or after CS50x. But for an introduction to computer science itself, you should still take CS50x!
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