Source: https://mokxi.com/learn/path/python-from-zero Updated: 2026-11-11 All paths # Python from zero Beginner Python on a Raspberry Pi: print, variables, decisions, loops, lists, functions, dicts and strings, then a button with gpiozero and a working pedestrian crossing. Raspberry Pi 4 Model B Free 7 lessons 5 h 4 chapters 1,635 XP Coding ยท Beginner +100 XP 0 of 7 done Start the course free Print and variables Lesson plan for teachers What you will build ## 2 projects, built step by step 7 lessons in 4 chapters, about 5 hours on a simulated Raspberry Pi 4 Model B. Free, in your browser, every step checked by the simulator. Chapter 1 project ### Decisions if, elif and else: comparisons, True and False, and, or and not, why indentation is part of the code, and a motion alarm that decides twice a second whether to light up. Open it in the simulator Chapter 2 project ### Dicts and strings Dictionaries that look a value up by its name, strings you can split, clean and change, and a little command line on the Pi: type "red on" and the red light obeys. Open it in the simulator The map ## Chapter by chapter Each lesson opens when the one before it is done, and each chapter ends in a project. Chapter 1 ## First words Make the Pi talk, remember and decide. Open 190 XP ### Print and variables Your first Python on a Raspberry Pi: print() to talk, variables to remember, a little math, f-strings, the three types you meet first, and an LED switched on from code. 0 of 6 steps Start What is in it Project Locked 350 XP ### Decisions if, elif and else: comparisons, True and False, and, or and not, why indentation is part of the code, and a motion alarm that decides twice a second whether to light up. 0 of 6 steps 5 questions, graded as you go. Chapter 2 ## Repeat and organize Loops, lists, functions and dicts: the tools every program is made of. Locked 190 XP ### Loops and lists for and range, lists you can index and grow, a list of real LEDs lit one after another, while loops that run forever, and break to stop one when the job is done. 0 of 6 steps Locked 175 XP ### Functions def to name a few lines and run them by name, parameters and defaults, return to hand a value back, functions that choose a light, and why a value goes in and comes out instead of being shared. 0 of 6 steps Project Locked 380 XP ### Dicts and strings Dictionaries that look a value up by its name, strings you can split, clean and change, and a little command line on the Pi: type "red on" and the red light obeys. 0 of 6 steps 5 questions, graded as you go. Chapter 3 ## Touch the world Read a button properly, with gpiozero. Locked 175 XP ### Reading a button with gpiozero A pushbutton on GPIO21: asking with is_pressed, why a pull-up keeps the pin from floating, waiting for a press, contact bounce, header pin numbers, timeouts, and callbacks that run when it happens. 0 of 6 steps 4 questions, graded as you go. Chapter 4 ## Boss project A pedestrian crossing built from everything in the course. Locked 175 XP ### Project: traffic lights The boss project: a pedestrian crossing on the traffic light module and a button, built from everything in the course: a phase function, the sequence as a list, a loop waiting on the button, a counter and a flashing amber. 0 of 6 steps 4 questions, graded as you go. Syllabus ## Every lesson in the course All 7 lessons, in order, each with what it covers. Any of them opens in the editor right away. Chapter 1 ### First words - Print and variables Your first Python on a Raspberry Pi: print() to talk, variables to remember, a little math, f-strings, the three types you meet first, and an LED switched on from code. - Decisions if, elif and else: comparisons, True and False, and, or and not, why indentation is part of the code, and a motion alarm that decides twice a second whether to light up. Chapter 2 ### Repeat and organize - Loops and lists for and range, lists you can index and grow, a list of real LEDs lit one after another, while loops that run forever, and break to stop one when the job is done. - Functions def to name a few lines and run them by name, parameters and defaults, return to hand a value back, functions that choose a light, and why a value goes in and comes out instead of being shared. - Dicts and strings Dictionaries that look a value up by its name, strings you can split, clean and change, and a little command line on the Pi: type "red on" and the red light obeys. Chapter 3 ### Touch the world - Reading a button with gpiozero A pushbutton on GPIO21: asking with is_pressed, why a pull-up keeps the pin from floating, waiting for a press, contact bounce, header pin numbers, timeouts, and callbacks that run when it happens. Chapter 4 ### Boss project - Project: traffic lights The boss project: a pedestrian crossing on the traffic light module and a button, built from everything in the course: a phase function, the sequence as a list, a loop waiting on the button, a counter and a flashing amber. Keep going ## The next course on your track Python from zero is part of the coding track, a ladder of courses from zero to expert. Next course ### C++ on a board The language, one idea per lesson, on a board that shows you what your code did. Open the next course Track ### Coding track Python and C++ from your first print to classes, tests and state machines. Every program runs on a simulated board, so a bug is something you can see. See every course on the track Kits ## Build it on your bench too Every lesson runs in the simulator with nothing to buy. When you want the real thing, these kits have the parts. Have a kit already? ### Find your kit Pick the starter kit you own and run every lesson in its manual with the same parts on the same pins. See every kit Questions ## About Python from zero Is Python from zero free? Yes. All 7 lessons of Python from zero are free and run in your browser, with nothing to install and no parts to buy before you start. Do I need a real Raspberry Pi 4 Model B? No. Every lesson runs on a simulated Raspberry Pi 4 Model B with its parts on the canvas, and the simulator checks each step as you go. When you want to build it for real, the same wiring and code work on a real board. How long does Python from zero take? About 5 hours: 7 lessons in 4 chapters, each one a few short steps. Your progress is kept, so you can stop after any lesson and pick up where you left off. What will I build? Each chapter ends in a project that puts it together: Decisions and Dicts and strings. Where do I start? With "Print and variables", and each lesson builds on the one before it. New to circuits? Electronics basics is the course that starts from zero.