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Lesson 13 of 20 · When Something Happens
When Something Happens — Part 20
When we run, things happen. One event, then actions. This is part 20 of 20.
What you'll learn
You will learn that events trigger actions, like dominoes — one thing causes the next.
Steps
- 1An 'event' is something that happens — like pressing a button, tapping the screen, or a program starting.
- 2In this code, the event is the program starting. Once it starts, it triggers a chain of actions: print Action 1, then Action 2.
- 3Think of it like a domino chain: one event (the push) triggers everything that follows.
- 4Games use events all the time: when you tap, the character jumps. When a timer ends, the level changes. Event → Action!
Key Terms
- Event
- Something that happens (e.g. a tap, a click, a timer finishing). Events trigger actions.
- Trigger
- To start something. An event triggers actions to happen.
- Action
- What the program does when an event happens (e.g. show a message, play a sound).
Python 3
Output
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