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Python Python Basics (2015) Number Game App Number Game Introduction

Jessica Yan
Jessica Yan
700 Points
Posted by Jessica Yan
Jessica Yan
700 Points

while True:

What does while True mean? What does the True refer to here as being truthy?

juliansteffen
juliansteffen
9,802 Points

Hello Jessica,

I might don't understand your question 100%. But in generel while True: means : while is a keyword for a "Loop-function" true is a boolean => it has just two stats 0 or 1 => true or false

The keyword while needs some Information "how long" it should loop the following block of code. With true you tell him "forever" there is no check for the while keyword if it should loop or not..just "hardcoded" run! If you would while False: ...it would never run.

True is no check to somewhere else. We tell just while run please :) anyway.

Greetings Julian

2 Answers

Sara Watson
PLUS
Sara Watson
Courses Plus Student 3,713 Points
Sara Watson
Sara Watson
Courses Plus Student 3,713 Points

while True: Means that you want the code within this while block to continuously execute, always. True is never False so it will loop forever.

William Gough
William Gough
18,852 Points
William Gough
William Gough
18,852 Points

Until break is executed inside the loop.

furkan
furkan
11,733 Points
furkan
furkan
11,733 Points

Hello Jessica Yan,

In this video, Kenneth used the while loop which is a way of running a set of codes over and over again. The codes that run are shown under the while true loop, which is more technically called a "code block". Now, a while loop always tests for a condition before it runs the code block under it, in this case, the condition is always True, because he has simply said >>> while True:

Therefore, the code block runs. However, he has another condition he is testing for, which is >>> if guess == secret_num This time he is testing to see if he guessed the number right. And if he did guess it right, then the game should end. So, a neat trick to get out of an infinite loop, in this case, while True: we use a break

A break statement ends the loop and exits out of it.

Hope this helped, all the best, Furkan.