Grids in Python

Questions 1 to 5 of 6

1. 1. Using the box function from worked example 3, how many . characters does this print? ``python print(box(4, 3, "#", "."), end="") ``

   4628
2. 2. This box test is meant to draw a 3 by 3 border, but the picture is blank: ``python border = (row == 0 and row == size - 1 and col == 0 and col == size - 1) `` What is wrong?

   The and operators should be or, because a border cell meets any one of the four edge testsThe size - 1 should be sizeThe loops should start at 1, not 0The == tests should be =
3. 3. The call box(1, 3, "#", ".") prints a single column of # with no fill. Why?

   A height of 3 is too tall for the box to be drawnThe fill is printed before the border, so it is always hiddenThe function uses print, which skips the fill charactersEvery cell is on the left edge and the right edge at once, so every cell is a border cell
4. 4. In the mixed-index program, the row loop starts at 1 and the column loop starts at 0. Why do the colours flip?

   Each row's sum is one more than it would be with a zero-based row, so the even and odd cells swapThe % operator only works when both numbers start at 0The range(1, size + 1) row loop prints one row too manyThe append calls put the characters in the wrong order
5. 5. Which operator gives the remainder after division, and is used in (row + col) % 2 == 0 to test whether the sum is even? Write the symbol.

   Type your answer.