🐍 Python

Learn to program from zero. Run every example here in your browser, with nothing to install.

1. Getting started with Python
Your first program, comments, and how Python uses indentation.
2. Variables and data types
Numbers, strings, booleans, and converting between them.
3. Strings
Slicing, useful methods and f-strings.
4. Conditions
if, elif, else, and combining tests.
5. Loops
Repeat work with for and while, and control it with break and continue.
6. Lists and tuples
Store many values, change them, and build lists in one line.
7. Dictionaries and sets
Look values up by key, and keep only unique items.
8. Functions
Reuse code with parameters, defaults and return values.
9. Errors and files
Handle problems without crashing, and read and write files safely.
10. Classes and objects
Bundle data with the code that uses it.
11. Python quick reference
Common built-ins and methods on one page.

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