Harvard CS50's Introduction to Programming with Python
- Course audio
- Course audio: English
- Level
- Beginner
- Length
- 11 lessons · 16 hours
What you'll be able to do
- Write clean Python with functions, conditionals and loops
- Test your code with unit tests and handle exceptions
- Use regular expressions, files and third-party libraries
- Design programs with classes and objects
About this course
David Malan's CS50P lectures from Harvard, published in full by freeCodeCamp and split into ten lectures. Each covers one idea in depth: functions and variables, conditionals, loops, exceptions, libraries, unit tests, file input and output, regular expressions and object-oriented programming, ending with a tour of further Python features. The lectures are long (about 16 hours in all) and best paired with the free CS50P problem sets on Harvard's own site. Ideal after a short first course, or as a rigorous first course if you have the time.
Syllabus
11 lessons · 15:57:48 in total
- 1Introduction4:48
- 2Lecture 0 - Functions, Variables1:45:36
- 3Lecture 1 - Conditionals55:59
- 4Lecture 2 - Loops1:20:47
- 5Lecture 3 - Exceptions44:35
- 6Lecture 4 - Libraries1:17:30
- 7Lecture 5 - Unit Tests51:07
- 8Lecture 6 - File I/O1:32:10
- 9Lecture 7 - Regular Expressions2:05:03
- 10Lecture 8 - Object-Oriented Programming2:51:12
- 11Lecture 9 - Et Cetera2:29:01
What to take next
Videos by freeCodeCamp.org, played from their official YouTube channel. Subscribe on YouTube
Official upload by the teacher or institution on their own channel, shown with YouTube's embedded player.
Lessons last checked Oct 2026. Course summary and lesson structure by Sabaq.
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