OK

main.py

@@ -18,7 +18,7 @@ class GridSquare:
     def __repr__(self):
         return str(self)
 
-def makeGrid(height, width):
+def makeGrid():
     return [[GridSquare(SquareType.AISLE, None) for x in range(0,width)] for y in range(0,height)]
 
 class Passenger:
@@ -48,18 +48,19 @@ def nextSquare(passenger, grid):
 def GenPassList():
     border = [Passenger((0, a),(-1,-1)) for a in range(0,3)]
     for x in range(1,width):
-        border.append([Passenger((x, a),(-1,-1)) for a in range(0,3)])
-        border.append([Passenger((x, a),(-1,-1)) for a in range(4,7)])
+        border += [Passenger((x, a),(-1,-1)) for a in range(0,3)]
+        border += [Passenger((x, a),(-1,-1)) for a in range(4,7)]
     return border 
 
 grid=makeGrid()
 
 #boarding order
 passengers = GenPassList()
-for index, i in enumerate(passengers):
-    grid[i.curr[0]][i.curr[1]] = index
+
+toad = 0
 
 def tick():
+    global toad
     # print grid
     for row in grid:
         for guy in row:
@@ -70,12 +71,15 @@ def tick():
             else:
                 print(" ", end="")
         print()
+    if toad < len(passengers):
+        grid[passengers[toad].curr[0]][passengers[toad].curr[1]].occupant = toad #added
+        toad += 1
     for (i, man) in enumerate(passengers):
         #im sexist
         cp = man.curr
         man.curr = nextSquare(man, grid)
-        grid[cp[0]][cp[1]] = None #they move out of there
-        grid[man.curr[0]][man.curr[1]] = i
+        grid[cp[0]][cp[1]].occupant = None #they move out of there
+        grid[man.curr[0]][man.curr[1]].occupant = i
 
 def run():
     while 1: