Minor fix for compatibility

Author: Tanguy Damart

bluepyopt/ephys/objectivescalculators.py

@@ -36,23 +36,26 @@ def __init__(
 
         self.objectives = objectives
 
-    def calculate_scores(self, responses, cell_model, param_dict):
+    def calculate_scores(self, responses, cell_model=None, param_dict=None):
         """Calculator the score for every objective"""
 
         scores = {}
 
-        cell_model.freeze(param_dict)
+        if param_dict and cell_model:
+            cell_model.freeze(param_dict)
 
         for objective in self.objectives:
 
             if issubclass(type(objective), objectives.EFeatureObjective):
                 scores[objective.name] = objective.calculate_score(responses)
             elif issubclass(type(objective), objectives.RuleObjective):
-                scores[objective.name] = objective.calculate_score(cell_model)
+                if param_dict and cell_model:
+                    scores[objective.name] = objective.calculate_score(cell_model)
             else:
                 raise Exception('Unknown objective class: {}'.format(type(objective)))
-
-        cell_model.unfreeze(param_dict.keys())
+        
+        if param_dict and cell_model:
+            cell_model.unfreeze(param_dict.keys())
 
         return scores
 

bluepyopt/ephys/protocols.py

@@ -163,7 +163,7 @@ def subprotocols(self):
 
     def _run_func(self, cell_model, param_values, sim=None):
         """Run protocols"""
-
+        
         try:
             cell_model.freeze(param_values)
             cell_model.instantiate(sim=sim)