Unit 4

Question 1

What does this program print?

favorite_color = “blue”

if favorite_color != “blue”:
if favorite_color != “red”:
print(“Must be yellow”)
elif favorite_color == “blue”:
if favorite_color != “yellow”:
print(“Must be blue”)
elif favorite_color == “blue”:
if favorite_color != “yellow”:
print(“I like purple”)
else:
if favorite_color == “blue”:
print(“Blue is the best”)

Answer 1

Must be blue

Question 2

How would you round the number held in the variable pi to 3.14?

pi = 3.14159265

Answer 2

round(pi, 2)

Question 3

Why should you use round when you compare two numbers that have type float?

Answer 3

Sometimes numbers can be rounded in unexpected ways based on how Python computes them. Therefore, it is best to use round in order to make sure both numbers are rounded the same way.

Question 4

What will print to the screen when the following program is run?

number = 5
greater_than_zero = number > 0
print(type(number))

Answer 4

<type ‘int’>

Question 5

What will print to the screen when the following program is run?
number = 5
less_than_zero = number < 0
print(type(less_than_zero)

Answer 5

<type ‘bool’>

Question 6

What will be the output of this program?
number = 5
greater_than_zero = number > 0

if greater_than_zero:
print(number)

Answer 6

5

Question 7

number = 5
greater_than_zero = number > 0

if greater_than_zero:
if number > 5:
print(number)

Answer 7

Nothing will print

Question 8

number = 5
less_than_zero = number < 0

if less_than_zero:
print(number)

number = number-10
less_than_zero = number < 0

if less_than_zero:
print(number)

Answer 8

-5

Question 9

number = 5
greater_than_zero = number > 0
less_than_zero = number < 0

if greater_than_zero:
print(number)
if less_than_zero:
print(number + 1)
if greater_than_zero and less_than_zero:
print(number + 2)
if greater_than_zero or less_than_zero:
print(number + 3)

Answer 9

5
8

Question 10

above_16 = True
has_permit = True
passed_test = False

if above_16 and has_permit and passed_test:
print(“Issue Driver’s License”)
elif above_16 or has_permit or passed_test:
print(“Almost eligible for Driver’s License”)
else:
print(“No requirements met.”)

Answer 10

Almost eligible for Driver’s License

Question 10

number_one = 5
number_two = 10

if number_one == 5:
print(1)
if number_one > 5:
print(2)
if number_two < 5:
print(3)
if number_one < number_two:
print(4)
if number_one != number_two:
print(5)

Answer 10

1
4
5

Question 10

number_one = 5
number_two = 10

if number_one == 5:
print(1)
elif number_one > 5:
print(2)
elif number_two < 5:
print(3)
elif number_one < number_two:
print(4)
elif number_one != number_two:
print(5)
else:
print(6)

Answer 10

1

Question 10

height = 65
gender = “female”

if height < 62:
print(“You are below average height”)
elif height > 69:
print(“You are above average height”)
else:
print(“You are average height”)

Answer 10

You are average height

Question 10

height = 65
gender = “female”

if height < 62 or (height < 69 and gender == “male”):
print(“You are below average height”)
elif height > 69 or (height > 62 and gender == “female”):
print(“You are above average height”)
else:
print(“You are average height”)

Answer 10

You are above average height

Question 11

favorite_color = “blue”

if favorite_color != “green”:
print(“But green is the color of grass!”)
if favorite_color == “red”:
print(“I like red, too!”)
if favorite_color == “blue”:
print(“Blue is the best”)
if favorite_color != “yellow”:
print(“But yellow is the color of school buses!”)

Answer 11

But green is the color of grass!
Blue is the best
But yellow is the color of school buses!