2D List

Which of the following statements is true about a 2D list in Python?

• It is a single list with two elements.

• It is a list of dictionaries.

• It is a list of lists.

Which of the following is true regarding 2D lists in Python?

• 2D lists are used to represent tabular data

• 2D lists can only contain integers

• 2D lists can only have equal-length rows

Which of the following is an example of a 2D-list in Python?

• {1: 'one', 2: 'two'}

• [[1, 2, 3], [4, 5, 6]]

• [(1, 2), (3, 4)]

Which of the following represents the correct syntax to refer to a specific item in a 2D list?

• list_name[row][column]

• list_name[row, column]

• list_name[column][row]

For example:

numbers = [ [1, 2, 3, 4], [2, 4, 6, 8], [3, 6, 9, 12]]

print(numbers[2][1]) refers to .......................

• 1

• 2

• 6

........................ will create a cloud at the third row, fourth column.

• clouds[4][5] = Cloud()

• clouds[3][4] = Cloud()

• clouds[4][3] = Cloud()

Which of the following statements accurately describes how to loop over the items of a 2D list in Python?

• Use a for loop with a single iterator variable to iterate over the list elements.

• Use two for loops, one nested within the other, to iterate over the rows and columns of the list.

• Use a while loop to iterate over the list elements until all items have been processed.