Build Your First Python Apps
Like Duolingo, but for Build Your First Python Apps. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Build Your First Python Apps
- The print function is used to output text to the screen
- Text must be wrapped in quotation marks to be recognized as a message
- Computers require exact syntax to execute commands
- A single character typo results in an error rather than a 'best guess' by the machine
- How to correctly use the print function to display text
- The computer's inability to interpret commands with typos
- Code must be written and formatted before it can be executed
- The output is the final result of the computer following the instruction
- The logical sequence of writing and executing a command
- The variable name goes on the left side of the equals sign
- Variables allow data to be reused across multiple lines of code
- The single equals sign (=) is used for assignment in Python
- Updating a variable's value automatically updates every reference to that variable
- How to assign a value to a variable name using the assignment operator
- The benefit of using variables for maintainability and updates
- The computer reads code from top to bottom
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Build Your First Python Apps the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
You want to see a message appear on your monitor. Which command should you use?
Get it right to open this lesson and 25 more in the app.
Where Build Your First Python Apps takes you
Stop reading about code and start writing it. Learn to automate boring tasks and build real tools using the world's most popular programming language.
- 1
Make the Computer Talk Back
- Your first line of code
- Storing info in variables
- Mixing text and numbers
- Asking the user for input
- 2
Teach Your App to Think
- Making yes or no decisions
- Repeating tasks with loops
- Organizing data in lists
- Handling mistakes without crashing
- Creating reusable shortcuts
- Building a simple guessing game
- 3
Unlock the Hidden Power
- Using other people's code
- Reading and writing files
- How Python works under the hood
3 sections · 13 units · 26 levels. Built to play, not to enroll.
You pick the voice
Build Your First Python Apps is taught in the The Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Build Your First Python Apps today.
Download Tomo, search Build Your First Python Apps, and play your first lesson in under a minute.