price_per_hour KeyError error handling correction

Author: Micaela Goddard

datacrunch/instances/instances.py

@@ -288,7 +288,7 @@ def get(self, status: str = None) -> List[Instance]:
             id=instance_dict['id'],
             instance_type=instance_dict['instance_type'],
             image=instance_dict['image'],
-            price_per_hour=instance_dict['price_per_hour'],
+            price_per_hour=instance_dict['price_per_hour'] if 'price_per_hour' in instance_dict else None,
             location=instance_dict['location'],
             hostname=instance_dict['hostname'],
             description=instance_dict['description'],