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4.2.3: Basic while loop expression. Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 40: 20 10 5 2 1 Note: These activities may test code with different test values. This activity will perform four tests, with userNum = 40, then with userNum = 2, then with userNum = 0, then with userNum = -1. See "How to Use zyBooks". Also note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

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MrRoyal

While loops are used to perform repetitive operations until a condition is met

The while loop expression written in Python, where comments are used to explain each action is as follows:

#The loops begins here

while userNum >=1:

   #This prints the number

   print(userNum)

   #This divides the number by 2

   userNum =int(userNum/2)

Read more about while loop at:

https://brainly.com/question/19344465

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