CodeHS Python Unit 7 Looping Quiz Review

What is the benefit of using the break command as in the program below?

• The user can enter as many answers as they want

• The program will break out of the loop as soon as the user enters the magic_number

• The loop will prompt the user to enter a number no matter what input they give

• The loop will give the magic_number after a certain number of tries

What will be printed to the screen when this program is run?

• 100 0 -75 -125 -150

• -150

• -175

• 175

What does this program print?

• It’s still a nice day

  It’s still a nice day

• It’s still a nice day

  It’s still a nice day

  It’s still a nice day

• It’s still a nice day

  It’s still a nice day

  It’s still a nice day

  It’s still a nice day

  It’s still a nice day

• It’s still a nice day

  It’s still a nice day

  It’s still a nice day

  It’s still a nice day

What is the value of sum when this loop completes?

• 8

• 9

• 20

• 0

Which of the following while loops would continue to loop as long as num has values between the range of 3-12, exclusive?

• while num > 12 and num < 3:

  # do something with num

• while num < 12 or num < 3:

  # do something with num

• while num <= 12 and num >= 3:

  # do something with num

• while num < 12 and num > 3:

  # do something with num

If the user enters ‘4’, I want the loop to exit. Where should the break command be placed in order to end the loop when the user enters this value?

• Line 3

• Line 5

• Line 7

• Line 9

Which of the following for loops would print the following numbers?

3 5 7 9

• for i in range(3, 10, 2):

  print(i)

• for i in range(3, 9, 2):

  print(i)

• for i in range(9):

  print(i)

• for i in range(3,9):

  print(i)

What does this program print?

• 0 1 2

• 0 1 2 4 5 6 7 8 9

• 0 1 2 3 4 5 6 7 8 9

• 0 1 2 3

When would a while loop be a better control structure to use than a for loop?

• When you need to repeat multiple commands

• When you need to repeat something 5 times

• When you don’t know how many times something will need to repeat

• When the user is inputting how many times to repeat something

What is the value of num when this loop completes?

• 2

• 8

• 12

• 20