Lesson 1: Hello, Python!
By the end you can: Make the computer print messages, add comments, and fix small mistakes.
1Recall
2New idea
Python is a programming language: a way to write instructions that a computer understands. It is used to build games, websites, robots and even AI.
Our first instruction is print(). It shows a message on the screen. The message goes inside brackets and quotes.
- Text in quotes is called a string: "Hello!"
- Python runs your lines from top to bottom
- A line starting with # is a comment. Python ignores it; it's a note for people
- Spelling matters: print works, Print does not
Tip: Mistakes are normal! When Python finds one, it shows an error message. Read the last line: it tells you what went wrong.
3Show me
Press Run. Then change the messages and run it again.
This one has a mistake on purpose. Run it, read the error, then fix it.
4Challenge 1
5Challenge 2
6Check
7At home
8Reflect
- What did you make the computer say today?
- Which error did you see, and how did you fix it?
- What would you like your programs to do next?