Articles
The lessons from the videos, written down, with code you can copy. Filed by language, then by level, in the order they are taught.
Python
From the first line to data structures and algorithms, in the order the videos teach them.
Beginner4 articles
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Lesson 14 min read
Your first Python program
Install Python 3.14, run it two ways, and read an eleven-line program one line at a time.
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Short note3 min read
Python has no braces: the whitespace is the code
Why four spaces decide what your program does, shown with one line that moves.
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Short note3 min read
The REPL or a file: two ways to run Python
When to type into the interactive shell, when to save a file, and what Python 3.14 added to the shell.
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Lesson 23 min read
Variables and types in Python
The five basic types, how to ask Python what type a value is, and how to turn one type into another.