diff --git a/agents4e.py b/agents4e.py
index 75369a69a..dde45e4c3 100644
--- a/agents4e.py
+++ b/agents4e.py
@@ -875,10 +875,10 @@ def __init__(self, agent_program, width=6, height=6):
     def init_world(self, program):
         """Spawn items in the world based on probabilities from the book"""
 
-        "WALLS"
+        # WALLS
         self.add_walls()
 
-        "PITS"
+        # PITS
         for x in range(self.x_start, self.x_end):
             for y in range(self.y_start, self.y_end):
                 if random.random() < self.pit_probability:
@@ -888,7 +888,7 @@ def init_world(self, program):
                     self.add_thing(Breeze(), (x + 1, y), True)
                     self.add_thing(Breeze(), (x, y + 1), True)
 
-        "WUMPUS"
+        # WUMPUS
         w_x, w_y = self.random_location_inbounds(exclude=(1, 1))
         self.add_thing(Wumpus(lambda x: ""), (w_x, w_y), True)
         self.add_thing(Stench(), (w_x - 1, w_y), True)
@@ -896,10 +896,10 @@ def init_world(self, program):
         self.add_thing(Stench(), (w_x, w_y - 1), True)
         self.add_thing(Stench(), (w_x, w_y + 1), True)
 
-        "GOLD"
+        # GOLD
         self.add_thing(Gold(), self.random_location_inbounds(exclude=(1, 1)), True)
 
-        "AGENT"
+        # AGENT
         self.add_thing(Explorer(program), (1, 1), True)
 
     def get_world(self, show_walls=True):