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Python While Loops

Quiz by Christoffer Hyden

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21 questions
Show answers
  • Q1
    What keyword is used to exit a while loop in Python?
    return
    continue
    exit
    break
    30s
  • Q2
    What does the 'continue' keyword do in a Python while loop?
    Prints a message to the console
    Skips the rest of the code inside the loop and starts the next iteration
    Ends the loop and exits the while loop
    Stops the entire program
    30s
  • Q3
    What is the syntax to start a while loop in Python?
    while loop:
    for i in range(5):
    if condition:
    do while condition:
    while condition:
    30s
  • Q4
    What is the purpose of using a 'while' loop in Python?
    To repeatedly execute a block of code as long as a certain condition is true
    To print a message to the console
    To execute a block of code once
    To skip a block of code
    30s
  • Q5
    How can you prevent an infinite loop in a while loop in Python?
    Increase the loop counter indefinitely
    Ensure that the loop condition eventually becomes false
    Use the 'continue' keyword
    Add a print statement at the end of the loop
    Delete the loop code
    30s
  • Q6
    What is the output of the following Python code snippet?while True: print('Hello, World!') break
    Nothing is printed
    Hello, World!
    Infinite loop
    Goodbye, World!
    Error
    30s
  • Q7
    What is the role of the 'else' block in a Python while loop?
    It is used to initialize loop variables
    It gets executed when the loop terminates normally (without a break statement)
    It gets executed before the loop starts
    It gets executed when a break statement is encountered
    It is where the loop condition is checked
    30s
  • Q8
    What is an infinite loop in Python?
    A loop that prints 'Hello, World!' repeatedly
    A loop that only runs once
    A loop that skips certain iterations
    A loop with a large number of iterations
    A loop that continues to execute indefinitely
    30s
  • Q9
    What is the purpose of the 'pass' keyword in a Python while loop?
    To restart the loop from the beginning
    To do nothing and act as a placeholder
    To skip the rest of the loop iteration
    To print a message to the console
    To exit the loop immediately
    30s
  • Q10
    How does a 'while' loop differ from a 'for' loop in Python?
    A 'while' loop is used when you don't know the number of iterations in advance, while a 'for' loop is used when you know the number of iterations
    A 'while' loop is used for mathematical calculations, while a 'for' loop is used for text manipulation
    A 'while' loop always runs an infinite number of times, while a 'for' loop runs a predefined number of times
    A 'while' loop can only iterate over numbers, while a 'for' loop can iterate over strings
    A 'while' loop can skip iterations, while a 'for' loop cannot
    30s
  • Q11
    What keyword is used in Python to create a while loop?
    do
    if
    while
    for
    30s
  • Q12
    What is the purpose of the 'break' statement in a while loop in Python?
    To print the loop variable
    To exit the loop prematurely
    To skip the current iteration and move to the next one
    To restart the loop from the beginning
    30s
  • Q13
    How can you prevent an infinite loop in Python while using a while loop?
    By ensuring the loop variable is updated inside the loop
    By increasing the loop variable by a fixed amount each iteration
    By using the 'continue' statement instead of 'break'
    By changing the loop condition to always evaluate to True
    30s
  • Q14
    What happens if the condition of a while loop in Python is initially False?
    The loop body will not be executed
    The loop will throw an error
    The loop will run indefinitely
    The loop body will be executed only once
    30s
  • Q15
    How do you ensure a while loop in Python eventually terminates?
    By adjusting the loop variable to meet the loop condition
    By using the 'stop' keyword to end the loop
    By decreasing the loop variable infinitely
    By adding more code inside the loop
    30s

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