Python: Writing Useful Scripts
Like Duolingo, but for Python: Writing Useful Scripts. 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.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Making Your Computer Follow Instructions and Scaling Up and Automating Work. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Python: Writing Useful Scripts
- In Python, an equals sign assigns whatever is calculated on the right side into the variable on the left
- Referencing a variable reads its current stored value
- Reassigning a variable overwrites its old value with the newly computed one
- Python treats quotes around a value as string text and bare digits as numeric values
- Python throws an error if you try to add a raw number to a text string with `+`
- The `str()` function converts an integer into text so it can safely join other strings
- Python uses `**` for exponents rather than the `^` symbol
- Single slash `/` in Python performs division and produces a decimal float
- The `%` modulo operator isolates the remainder left after whole division
- Placing the letter `f` before quotes turns a normal string into an f-string in Python
- Curly braces `{}` inside an f-string evaluate and insert variable values directly into the text
- Without the `f` prefix, Python displays the literal curly braces and text instead of the variable's value
- `print()` outputs values to the screen so you can inspect them, but never changes what is stored in a variable
- Python only alters a variable's stored value when an assignment (`=`) takes place
- A script runs calculations internally in silent memory unless explicitly told to `print()` them
- Python only runs the indented code under an `if` when the condition is True
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 Python: Writing Useful Scripts 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.
If you have `score = 10` and then write `score + 2`, what does Python do when it sees `score`?
Get it right to open this lesson and 11 more in the app.
Where Python: Writing Useful Scripts takes you
Learn how to write real, functioning Python code to automate tedious tasks and crunch everyday numbers. Build confidence step-by-step from your first variable to clean, reusable custom functions.
- 1
Making Your Computer Follow Instructions
- Storing and Transforming Values
- Branching Paths with Conditions
- 2
Scaling Up and Automating Work
- Processing Collections with Loops
- Packaging Reusable Logic into Functions
2 sections · 4 units · 12 levels. Built to play, not to enroll.
You pick the voice
Python: Writing Useful Scripts 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.
More Technology on Tomo
Python Programming for Beginners
Stop reading about code and start writing it. Build your first programs immediately and learn how to think like a developer to solve real-world problems.
VBA: Automate Your Excel Tasks
Stop doing the same manual tasks every day. Learn to record, write, and refine VBA macros to make Excel work for you while you focus on what matters.
Electric Circuits: Follow the Flow
Learn to trace, build, and troubleshoot the invisible paths that power our world, from simple flashlights to home wiring.
Mastering Godot: Beyond the Basics
Level up your game development skills by mastering the flow of data and the power of modular nodes. Learn to build flexible systems that make your games feel professional and polished.
Data Science for Real People
Stop staring at spreadsheets and start telling stories with data. Learn to solve real-world problems using Python, SQL, and visual tools while mastering the art of the data-driven decision.
Building Apps That Stick Together
Move beyond writing code to building complete systems. Learn how to connect your logic to the real world, manage data flow without the mess, and make confident architectural choices that stop decision fatigue.
Start Python: Writing Useful Scripts today.
Download Tomo, search Python: Writing Useful Scripts, and play your first lesson in under a minute.