Question

Fill in the blank in the following program such that it prints out 7.

To get credit, your answer must be in the form of three numbers X,Y,Z separated by commas with no spaces in between.
indexes = { ___ }
mega_list = {[[1,2,3], [4,5,6]], [[7,8,9], [10,11,12]]}
print(mega_list [indexes[0]] [indexes[1]] [indexes[2]])

Answer 1

To print out 7, the blank in the given program can be filled with the numbers 1, 0, and 0. By accessing the elements at the specified indexes, the code successfully retrieves the desired value.

Step-by-step explanation:

The blank in the given code can be filled with the numbers 1, 0, and 0. The indexes list contains the three numbers to access the desired element in the mega_list.

The given program is accessing the element at index 1 of mega_list, which is [[7, 8, 9], [10, 11, 12]]. Then, it accesses the element at index 0 of the inner list, which is [7, 8, 9]. Finally, it accesses the element at index 0 of [7, 8, 9], which is 7.

The student's question involves indexing into a nested list structure in the Python programming language. To print out the number 7 from mega_list, you need to access the first list inside the second list and then the first element inside that. The correct indexes to achieve this are 1,0,0.

So, filling out the blank with these numbers, the indexes dictionary should look like this: indexes = {1,0,0}. As a result, the mega_list[indexes[0]][indexes[1]][indexes[2]] will yield the number 7.

So, by providing the indexes as 1, 0, 0, the code will print out 7.