Python - Introduction to While Loops
Presentation
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Computers
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8th - 11th Grade
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Medium
Martin Dunn
Used 121+ times
FREE Resource
10 Slides • 9 Questions
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Python - While Loops
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While Loops
A while loop is a block of code that will keep repeating until a condition has been met.
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Example
This example asks you what the capital city of France is.
It keeps asking the same question if your answer is not Paris.
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Multiple Choice
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Conditions that cause and stop a loop.
Loops can sometime be stuck in an infinite loop
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This can be fixed by asking for a user input for the variable "play" during each loop.
The loop will carry on if you type "yes" (meeting the condition)
Typing anything else will stop the loop.
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Using a Counter
This loop will print out "Let's play" each time is runs.
After every loop, the counter increases by one.
It continue to loop while the counter is less than 5
What happens when the counter reaches 5?
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Multiple Choice
How many times will this program print out "Let's play before the loop stops?"
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Multiple Choice
How many times will this loop run before it exits?
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Using "break" to end a loop
In this example, the loop is still set to run 5 times.
On each loop you are asked the question "what is 2+2".
If you answer correctly, you are told "correct" and the loop breaks.
Python - While Loops
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