Module 2~8 min
Loops
Loops let a program repeat an action multiple times without writing the same code over and over.
What You'll Learn
- What a loop is
- Why loops save repetitive work
- A basic example of a loop
Repeating Actions
A loop repeats a block of code either a specific number of times or until a certain condition is met, avoiding the need to duplicate the same instructions manually.
A Simple Example
A loop might be used to process every item in a list one at a time, applying the same action to each without writing separate code for each item.
Example
Instead of writing a separate line to print each of ten names, a loop can repeat one print instruction ten times, once for each name in a list.
Key Concepts
LoopRepetitionIteration
Key Takeaways
- A loop repeats a block of code multiple times
- Loops avoid the need to duplicate the same instructions manually
- Loops are often used to process every item in a list
Knowledge Check
What is the main purpose of a loop?