REVIEW QUIZ Basic Python and Console Interaction

input() functions stores that value as a

• string

• integer

• float

Answer explanation

The input() function in Python always returns data as a string, regardless of the type of input provided. Therefore, the correct answer is 'string'.

On which line will this program call an error in the console?

• Line 1

• Line 2

• Line 3

• Line 4

• No error will occur

Answer explanation

The program will call an error on Line 2 due to a syntax issue, such as a missing semicolon or incorrect variable declaration. This will prevent the code from executing properly.

Which of the following code snippets will result in a type error?

• apples = int(input('How many apples? '))
  print('Total apples: ' + str(apples + 2))

• apples = int(input('How many apples? '))
  print(str(apples + 2))

• apples = int(input('How many apples? '))
  print(apples)

• apples = int(input('How many apples? '))
  print(2 + ' apples')

Answer explanation

The code snippet 'print(2 + ' apples')' results in a type error because it attempts to add an integer (2) to a string (' apples'), which is not allowed in Python.

Which of the following code snippets will not produce an error, assuming the user inputs an integer?

• 
• 
• 

Answer explanation

this answer is correct

adds the dozen which is an integer to 1 which is an integer

then converts answer to a string

and prints

NOTICE THE PARENTHESE ARRANGEMENT

What will be printed to the screen when the following code snippet is run?

• <class str>

• 120

• 1210

• <class int>

Answer explanation

The code snippet likely involves a string operation, resulting in a string type. Therefore, the output will indicate the type of the variable, which is , making it the correct answer.

Which of the following cannot be used as a variable name in a Python program?

• one_word

• oneWord

• 1word

• word1

• word_1

Answer explanation

In Python, variable names cannot start with a digit. Therefore, '1word' is invalid, while 'one_word', 'oneWord', 'word1', and 'word_1' are all valid variable names.

Which of the following equations will return the lowest value?

• print (9 / 6)

• print (4 / 2)

• print (15.0 / 6.0)

• print (8 / 3)

• print (9.0 / 4.0)

Answer explanation

The equation print(9 / 6) evaluates to 1.5, which is lower than the other options: 2.0, 2.5, 2.6667, and 2.25. Therefore, print(9 / 6) returns the lowest value.

Given the assigned values of x and y, which of the following expressions will produce the smallest value?

• x % y

• x / y

• x - y

• x * y

• x // y

Answer explanation

Among the expressions, x // y (floor division) yields the smallest value, especially when x is less than y, as it results in 0. Other operations like x % y, x / y, x - y, and x * y can produce larger values.

What does the modulus operator return?

• The rounded quotient when one number is divided by another.

• The truncated quotient when one number is divided by another.

• The answer when one number is raised to the power of another.

• The remainder when one number is divided by another.

• The integer quotient when one floating point number is divided by an integer.

Answer explanation

The modulus operator returns the remainder when one number is divided by another. This is why the correct answer is 'The remainder when one number is divided by another.' It does not provide the quotient or any other operation.

Which of the following code snippets will not print 3.0 to the screen?

• x = 6 y = 2 print(x / y)

• x = 1.5 y = 2 print(float(x * y))

• x = 6 y = 2 print(x // y)

• x = 6 y = 2 print(float(x / y))

• x = 5 y = 2 z = x - y print(float(z))

Answer explanation

The code snippet 'print(x // y)' performs integer division, resulting in 3, not 3.0. All other snippets use floating-point division or operations that yield 3.0.