FEATURE: making variable private

Author: chemardes

pdesolvers/optionspricing/monte_carlo.py

@@ -28,7 +28,7 @@ def __init__(self, option_type: OptionType, S0, strike_price, r, sigma, T, time_
         self.__time_steps = time_steps
         self.__sim = sim
         self.__S = None
-        self.duration = 0.0
+        self.__duration = 0.0
 
     def get_monte_carlo_option_price(self):
 
@@ -104,4 +104,4 @@ def plot(self):
         plt.show()
 
     def get_execution_time(self):
-        return self.duration
+        return self.__duration