Unit 9 Test Review

What does the following program print?

my_grid = [[2, 5, 7, 10], [-3, "hello", 9, "hi"], ["hello", "hi", "hello", "hi"], [True, False, True, False]] print(my_grid[0])

• [5, 7, 10, -3, ‘hello’, 9, ‘hi’]

• [2, 5]

• [[2, 5, 7, 10], [-3, ‘hello’, 9, ‘hi’]]

• [2, 5, 7, 10]

What does the following program print?

my_grid = [[2, 5, 7, 10], [-3, "hello", 9, "hi"], ["hello", "hi", "hello", "hi"], [True, False, True, False]] print(my_grid[:2])

• [5, 7, 10, -3, ‘hello’, 9, ‘hi’]

• [2, 5]

• [[2, 5, 7, 10], [-3, ‘hello’, 9, ‘hi’]]

• [2, 5, 7, 10]

What does this program print?

numbers = [x + x for x in range(4)] print(numbers)

• [0, 1, 2, 3, 4]

• [0, 1, 2, 3]

• [2, 4, 6, 8]

• [0, 2, 4, 6]

What does this program print?

numbers = [x % 2 == 0 for x in range(0, 6)] print(numbers)

• [True, False, True, False, True, False]

• [0, 1, 0, 1, 0, 1, 0]

• [0, 1, 0, 1, 0, 1]

• [0, 1, 2, 3, 4, 5]

Which of the following is a correct example of packing?

• my_list = [1, 2, 3]

  x, y, z = my_list

• my_list = [1, 2, 3]

  x = y = z = my_list

• x = 1

  y = 2

  z = 3

  my_list = [x, y, z]

• x = 1

  y = 2

  z = 3

  my_list = x = y = z

Which of the following is a correct example of unpacking?

• my_list = [1, 2, 3]

  x, y, z = my_list

• my_list = [1, 2, 3]

  x = y = z = my_list

• x = 1

  y = 2

  z = 3

  my_list = [x, y, z]

• x = 1

  y = 2

  z = 3

  my_list = x = y = z

Suppose you have the following dictionary, which stores the names and ages of people:

my_dictionary = {

"Bo": 32,

"Fiona": 28,

"Carlos": 45

}

Which line correctly prints Bo’s age?

• print(my_dictionary[0])

• print(my_dictionary[0][1])

• print(my_dictionary["Bo"])

• print(my_dictionary["Bo"][1])

Refer to the following program. Are x and y equivalent?

x = [1, 2, 3]

y = x

• Yes

• No

Refer to the following program. Are x and y identical?

x = [1, 2, 3]

y = x

• Yes

• No

Refer to the following program. Are x and y equivalent?

x = [1, 2, 3]

y = [1, 2, 3]

• Yes

• No