added part b of step 4

Project 5/TurtleDFS.py

@@ -8,4 +8,37 @@
 
 import os
 from Stack import Stack
-from TurtleMaze import TurtleMaze, Cell, Contents
+from TurtleMaze import TurtleMaze, Cell, Contents
+
+def get_neighbors(maze: TurtleMaze, cell: Cell) -> list[Cell]:
+    '''returns a list of non-obstacle neighbors in north, south, east, west order'''
+
+    neighbors = []
+    row = cell.y
+    col = cell.x
+
+    # north
+    if row - 1 >= 0:
+        north = maze[row - 1][col]
+        if not north.isBlocked():
+            neighbors.append(north)
+
+    # south
+    if row + 1 < len(maze.maze_grid):
+        south = maze[row + 1][col]
+        if not south.isBlocked():
+            neighbors.append(south)
+
+    # east
+    if col + 1 < len(maze[0]):
+        east = maze[row][col + 1]
+        if not east.isBlocked():
+            neighbors.append(east)
+
+    # west
+    if col - 1 >= 0:
+        west = maze[row][col - 1]
+        if not west.isBlocked():
+            neighbors.append(west)
+
+    return neighbors