5.14. Multiple Choice Questions

Q-1: What will be printed when the following code executes?

def test(a, b = 5):
    print(a, b)

test(-3)

• a, b
• It will print the value of a and b.
• -3, b
• It will print -3 and the value of b.
• a, 5
• It will print the value of a and 5.
• -3, 5
• It looks like it will print this, but it will actually print the values with a space between them.
• -3 5
• It prints the values of a and b with a space between them. The default value of b is 5.

Q-2: What will the following Python program print out? (Given that each word will actually print on a new line)

def fred():
    print("Zap")

def jane():
    print("ABC")

jane()
fred()
jane()

• Zap ABC jane fred jane
• Incorrect! This code will only print the strings "Zap" or "ABC", not "jane" or "fred". Try again.
• Zap ABC Zap
• Incorrect! This would be correct if the call was fred() jane() fred(). Try again.
• ABC Zap jane
• Incorrect! This code will only print the strings "Zap" or "ABC", not "jane" or "fred". Try again.
• ABC Zap ABC
• Correct! jane() fred() jane() will print ABC Zap ABC.
• Zap Zap Zap
• Incorrect! This would be correct if the call was fred() fred() fred(). Try again.

Q-3: What value is printed when the following code is executed?

name = "Jane Doe"
def myFunction(parameter):
    value = "First"
    value = parameter
    print (value)

myFunction("Second")

• value
• Incorrect! "value" is the name of a variable. This code will print what "value" is assigned to. Try again.
• Second
• Correct! "value" is assigned to the value of parameter which is "Second", so that's what will print.
• parameter
• Incorrect! "parameter" is equal to the function call's argument. Try again.
• First
• Incorrect! Although the variable value is assigned to "First" initially, it is then reassigned to be equal to the parameter. Try again.
• Jane Doe
• Incorrect! The "name" variable is unused in the function call, so it does not affect what is printed. Try again.

Q-4: A named sequence of statements is known as which of the following?

• definition
• Incorrect! A definition is used to create functions. Try again.
• method
• Incorrect! A method is a function that is defined in a class.
• turtle
• Incorrect! "turtle" is a specific Python module that lets you draw lines and shapes. Try again.
• module
• Incorrect! A module is a file that contains Python statements and definitions. Try again.
• function
• Correct! A function is a named sequence of statements in Python.

Q-5: What will the following code print?

def pow(b, p):
    y = b ** p
    return y

def square(x):
    a = pow(x, 2)
    return a

n = 5
result = square(n)
print(result)

• 5
• This would be true if it first printed the value of x.
• 10
• This would be true if it printed 5 * 2 but it is 5 ** 2 which is 5 * 5.
• 25
• It prints the value of 5 raised to the 2nd power which is 5 * 5 = 25.
• 32
• This would be true if it was 2 raised to the 5th power (2 * 2 * 2 * 2 * 2) = 32.
• 3125
• This would be ture if it was 5 raised to the 5th power (5 * 5 * 5 * 5 * 5) = 3125.

Q-6: Consider the following Python code. What does this code print?

def rem(a, b):
    return a % b

print(rem(3,7))

• 0
• This would be true if it was rem(3,3). The value 3 would go into 3 one time with 0 remainder.
• 3
• The value 7 goes into 3 zero times, so the remainder is 3.
• 7
• How many times does 7 go evenly into 3 and what is the remainder?
• 1
• This would be true if it was rem(7,3)

Q-7: Which of the following would NOT work as a variable name?

• a
• Incorrect! a is a valid variable name. Try again.
• len
• Correct! This would not work as a variable name because it is already reserved as a built-in function name.
• length
• Incorrect! length would work as a variable because it is not a reserved word or a built-in function. Try again.
• x
• Incorrect! x is a valid variable name. Try again.

Q-8: Consider the code below. What prints?

print(int(33.7))

• 34.0
• Incorrect! The int function converts a floating point number to an integer. Try again.
• 34
• Incorrect! The int function does not round up. Try again.
• 33.70
• Incorrect! The int function converts a floating point number to an integer. Try again.
• 33
• Correct! The int function always truncates floating point numbers.

Q-9: Consider the code below. Line 1 is called…

def printWeather():
    print("It is sunny!")

• the function header
• Correct! The first line of a function definition is the header.
• the function body
• Incorrect! Everything but the first line of a function definition is the function body. Try again.
• the function definition
• Incorrect! Lines 1 and 2 collectively are the function definition. Try again.
• the function named
• Incorrect! The name is printWeather.

Q-10: Consider the code block below. What happens when you run this program?

repeat_lyrics()

def repeat_lyrics():
    print_lyrics()
    print_lyrics()

def print_lyrics():
    print("I'm a lumberjack, and I'm okay.")
    print('I sleep all night and I work all day.')

• The lyrics print like normal.
• Incorrect! An error occurs when you call a function before it is defined. Try again.
• We get a TypeError.
• Incorrect! This will not cause a TypeError because there is not an issue with the variable types. Try again.
• We get a NameError.
• Correct! You get a NameError when you call a function before it is defined.
• The program compiles but nothing prints.
• Incorrect! This program will not compile. Try again.

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