Loops & Iterations

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Loops & Iterations

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What is wrong with this Python loop:

n = 5

while n > 0 :

print(n)

print('All done')

1 point

There should be no colon on the while statement

The print('All done') statement should be indented four spaces

while is not a Python reserved word

This loop will run forever

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What does the break statement do?

1 point

Resets the iteration variable to its initial value

Jumps to the "top" of the loop and starts the next iteration

Exits the program

Exits the currently executing loop

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What does the continue statement do?

1 point

Jumps to the "top" of the loop and starts the next iteration

Exits the currently executing loop

Resets the iteration variable to its initial value

Exits the program

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What does the following Python program print out?

tot = 0

for i in [5, 4, 3, 2, 1] :

tot = tot + 1

print(tot)

1 point

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What is the iteration variable in the following Python code:

friends = ['Joseph', 'Glenn', 'Sally']

for friend in friends :

print('Happy New Year:', friend)

print('Done!')

1 point

Sally

friend

friends

Glenn

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What is a good description of the following bit of Python code?

zork = 0

for thing in [9, 41, 12, 3, 74, 15] :

zork = zork + thing

print('After', zork)

1 point

Find the largest item in a list

Count all of the elements in a list

Find the smallest item in a list

Sum all the elements of a list

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What will the following code print out?

smallest_so_far = -1

for the_num in [9, 41, 12, 3, 74, 15] :

if the_num < smallest_so_far :

smallest_so_far = the_num

print(smallest_so_far)

1 point

-1

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What is a good statement to describe the is operator as used in the following if statement:

if smallest is None :

smallest = value

1 point

Looks up 'None' in the smallest variable if it is a string

matches both type and value

The if statement is a syntax error

Is true if the smallest variable has a value of -1

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Which reserved word indicates the start of an "indefinite" loop in Python?

1 point

while

indef

for

break

def

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How many times will the body of the following loop be executed?

n = 0

while n > 0 :

print('Lather')

print('Rinse')

print('Dry off!')

1 point

This is an infinite loop

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