fixed mypy errors

caimira/apps/simulator.py

@@ -124,8 +124,8 @@ def update_plot(self, model: models.CO2ConcentrationModel):
         figure_legends = [mlines.Line2D([], [], color='#3530fe', markersize=15, label='CO₂ concentration'),
                    patches.Patch(edgecolor="#96cbff", facecolor='#96cbff', label='Presence of person(s)')]
         self.ax.legend(handles=figure_legends)
-        if 1500 < max(concentration):
-            self.ax.set_ylim(top=max(concentration)*1.1)
+        if 1500 < concentration_top:
+            self.ax.set_ylim(top=concentration_top*1.1)
         else:
             self.ax.set_ylim(top=1550)
         self.ax.hlines([800, 1500], xmin=min(model.CO2_emitters.presence.boundaries()[0])*0.95, xmax=max(model.CO2_emitters.presence.boundaries()[1])*1.05, colors=['limegreen', 'salmon'], linestyles='dashed') 
@@ -139,7 +139,7 @@ def __init__(self) -> None:
 
         #: A list of scenario name and ModelState instances. This is intended to be
         #: mutated. Any mutation should notify the appropriate Views for handling.
-        self._model_scenarios = []
+        self._model_scenarios: typing.List[ScenarioType] = []
         self._active_scenario = 0
         self.multi_model_view = MultiModelView(self)
         # self.comparison_view = ExposureComparissonResult()

caimira/models.py

@@ -1008,11 +1008,12 @@ def _normed_concentration_limit(self, time: float) -> _VectorisedFloat:
         if not self.population.person_present(time):
             return self.min_background_concentration()/self.normalization_factor()
         V = self.room.volume
-        # RR = self.removal_rate(time) if self.removal_rate(time) != 0 else 0.25
         RR = self.removal_rate(time)
-
-        return (1. / (RR * V) + self.min_background_concentration()/
+        try:
+            return (1. / (RR * V) + self.min_background_concentration()/
                 self.normalization_factor())
+        except ZeroDivisionError:
+            return 0
 
     @method_cache
     def state_change_times(self) -> typing.List[float]:
@@ -1206,7 +1207,7 @@ def population(self) -> Population:
         return self.CO2_emitters
 
     def removal_rate(self, time: float) -> _VectorisedFloat:
-        return self.ventilation.air_exchange(self.room, time) + 0.25
+        return self.ventilation.air_exchange(self.room, time)
 
     def min_background_concentration(self) -> _VectorisedFloat:
         """