Added logic to catch unexpected JSON config - eg, missing keys.

src/acom_music_box/music_box_evolving_conditions.py

@@ -108,9 +108,12 @@ def from_config_JSON(cls, path_to_json ,config_JSON, species_list, reaction_list
 
         # Check if 'evolving conditions' is a key in the JSON config
         if 'evolving conditions' in config_JSON:
-            # Construct the path to the evolving conditions file
-            evolving_conditions_path = os.path.dirname(path_to_json) + "/" + list(config_JSON['evolving conditions'].keys())[0]
-            evolving_conditions =  EvolvingConditions.read_conditions_from_file( evolving_conditions_path, species_list, reaction_list)
+            if len(config_JSON['evolving conditions'].keys()) > 0:
+                # Construct the path to the evolving conditions file
+                evolving_conditions_path = (os.path.dirname(path_to_json) + "/"
+                    + list(config_JSON['evolving conditions'].keys())[0])
+                evolving_conditions =  EvolvingConditions.read_conditions_from_file(
+                    evolving_conditions_path, species_list, reaction_list)
 
         return evolving_conditions
 

src/acom_music_box/music_box_reaction_list.py

@@ -5,6 +5,9 @@
 from .music_box_reactant import Reactant
 from .music_box_product import Product
 
+import logging
+logger = logging.getLogger(__name__)
+
 class ReactionList:
     """
     Represents a list of chemical reactions.
@@ -114,12 +117,14 @@ def get_reactants_from_JSON(self, reaction, species_list):
         """
         reactants = []
 
-        for reactant, reactant_info in reaction['reactants'].items():
-            match = filter(lambda x: x.name == reactant, species_list.species)
-            species = next(match, None)
-            quantity = reactant_info['qty'] if 'qty' in reactant_info else None
+        if ('reactants' in reaction.keys()):
+            for reactant, reactant_info in reaction['reactants'].items():
+                match = filter(lambda x: x.name == reactant, species_list.species)
+                species = next(match, None)
+                #logger.info("reactant = {}   species = {}".format(reactant, species))
+                quantity = reactant_info['qty'] if 'qty' in reactant_info else None
 
-            reactants.append(Reactant(species, quantity))
+                reactants.append(Reactant(species, quantity))
         return reactants
 
     @classmethod