resubmitting

tile_grid.py

@@ -10,7 +10,19 @@ 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.
 
-    (Your explanation here.)
+    (The width, height, and tile_size are input when running the program 
+    from the terminal. The tile_function determines the pattern drawn on the 
+    tile, and when the tile_function argument is called, it passes and runs 
+    the function draw_tile from tile.py, because it is the last function it 
+    encountered...?
+
+    The "for y in range(height):" calls a loop determined by the the number of
+    rows indicated by the height. The "for x in range(width):" calls a loop
+    determined by the number of columns indicated by the width. The program 
+    draws a complete row, then stops drawing and returns to the horizontal 
+    starting point and moves up one tile length. It returns to the origin at
+    the very end.)
+    
     """
     for y in range(height):
         for x in range(width):