python loop practice

What's your mood today?

• 
• 
• 
• 

What is the result of executing the following code?

number = 5

while number <= 5:

if number < 5:

number = number + 1

print(number)

• The program will loop indefinitely

• The value of number will be printed exactly 1 time

• The while loop will never get executed

• The value of number will be printed exactly 5 times

What will the following code print?

counter = 1

sum = 0

while counter <= 6:

sum = sum + counter

counter = counter + 2

print(sum)

• 12

• 9

• 7

• 8

What will be printed by the following code when it executes?

sum = 0

values = [1,3,5,7]

for number in values:

sum = sum + number

print(sum)

• 4

• 0

• 7

• 16

What is the last thing printed when the following code is run?

number = 0

while number <= 10:

print("Number: ", number)

number = number + 1

• Number: 10

• Number: number

• Number: 0

• Number: 11

What does the following code print?

output = ""

x = -5

while x < 0:

x = x + 1

output = output + str(x) + " "

print(output)

• 5 4 3 2 1

• -4 -3 -2 -1 0

• -5 -4 -3 -2 -1

• This is an infinite loop, so nothing will be printed

What are the values of var1 and var2 that are printed when the following code executes?

• var1 = -2, var2 = 0

• var1 = 0, var2 = -2

• var1 = 0, var2 = -1

• This is an infinite loop, so nothing will be printed

How many asterisks will be printed when the following code executes?

for x in [0, 1, 2, 3]:

for y in [0, 1, 2, 3, 4]:

print('*')

• 0

• 4

• 5

• 20

• This is an infinite loop, so nothing will be printed

The following code contains an infinite loop. Which is the best explanation for why the loop does not terminate?

• In the while loop body, we must set n to False, and this code does not do that.

• answer starts at 1 and is incremented by n each time, so it will always be positive.

• n starts at 10 and is incremented by 1 each time through the loop, so it will always be positive.

• You cannot compare n to 0 in the while loop. You must compare it to another variable.

Which type of loop can be used to perform the following iteration: You choose a positive integer at random and then print the numbers from 1 up to and including the selected integer.

• a for-loop or a while-loop

• only a for-loop

• only a while-loop