Week 7 Quiz

Predict, then check: which line does this program print first?

def greet():
    print("Hello from inside the function")

print("Defined, not yet called")
greet()
greet()

Select one.

• Hello from inside the function
• Defined, not yet called
• Nothing; the def block raises an error first
• Hello from inside the function, printed by the def line

Predict, then check: what does this program print?

def pages_left(goal, pages_read):
    return goal - pages_read

print(pages_left(300, 45))

Select one.

• 345
• −255
• 255
• 45

Predict, then check: the arguments are written in a different order. What does this program print?

def pages_left(goal, pages_read):
    return goal - pages_read

print(pages_left(45, 300))

Select one.

• −255
• 255
• 0
• TypeError

Predict, then check: what does this program print?

def pages_left(goal, pages_read):
    return goal - pages_read

print(pages_left(200, 45) // 30)

Select one.

• 155
• 6
• 8
• 5

Predict, then check: what does this program print?

def show(x):
    print(x * 2)

print(show(4))

Select one.

• 8, then None on a second line
• 8 only
• None only
• 8, then 8 again on a second line

Predict, then check: what does this program print?

n = 5

def change():
    n = 99

change()
print(n)

Select one.

• 99
• 5
• None
• NameError

This program prints 8 and then stops with an error. Reading the error from the bottom up, which exception type does its last line name?

def double(x):
    print(x * 2)

y = double(4)
print(y + 1)

Select one.

• NameError
• SyntaxError
• TypeError
• ValueError

Predict, then check: how many lines does this program print in all?

def greet():
    print("Hello from inside the function")

print("Defined, not yet called")
for i in range(2):
    greet()

Select one.

• 2
• 4
• 1
• 3

Select every line this program prints.

level = 100

def show():
    print("inside sees", level)

def reset():
    level = 0
    print("inside", level)

show()
reset()
print("outside", level)

Select every option that applies.

• inside sees 100
• outside 0
• inside 0
• outside 100
• inside sees 0

A chatbot claims this program prints a single line, 8, because show returns the value it prints. True or false: running the program confirms the chatbot's claim.

def show(x):
    print(x * 2)

print(show(4))

True or false.

• True
• False