tile.py tile_grid.py drawtiles.py

Yes, I'll use docstrings because I can type more comments between """ and """.
I'll still use # to the right of code to comment on the code line.

tile_grid.py

@@ -8,9 +8,13 @@ from turtle import *
 from tile import fly
 
 def draw_tile_grid(width, height, tile_size, tile_function):
-    """Draws a (width x height) grid, with tile_function drawn on each tile.
+    """Draws a (width * height) grid, with tile_function drawn on each tile.
 
-    (Your explanation here.)
+    (nested loops - inner loop draws one complete row (width), inner loop closes, 
+    outer loop positions the pen's return to row starting point, 
+    then moves pen up along height to start a new row.)
+    -- (fly(tile_size) positions the pen in the next column (width) to the right
+    to draw the next tile in each row)
     """
     for y in range(height):
         for x in range(width):
@@ -37,6 +41,3 @@ def move_up_one_row(tile_size):
     right(90)
 
 
-
-
-