Updated line 55 with: def calculate_intrinsic_reward(self, eta, count, epsilon):

app.py

@@ -51,7 +51,8 @@ r_{t}^{int} \eta \frac{1}{\sqrt{N(s_{t}) + \epsilon}} = 0.1 \frac{1}{\sqrt{2 + 1
 
 # Abstract Base Class for Intrinsic Reward Calculation
 class IntrinsicRewardCalculator(ABC):  
-    @abstractmethod  def calculate_intrinsic_reward(self, eta, count, epsilon):    
+    @abstractmethod  
+    def calculate_intrinsic_reward(self, eta, count, epsilon):    
         pass
         
 # Concrete Class for Intrinsic Reward Calculation