.get()

anselm.py

@@ -100,7 +100,7 @@ class Anselm(System):
 
         line_key = self.get_line_key(line)
 
-        doc_id = self.state[line_key]['doc_id']
+        doc_id = self.state.get(line_key).get('doc_id')
         task_name = combo.currentText()
         self.state[line_key]['task_name'] = task_name
 

anselm/db.py

@@ -12,9 +12,9 @@ class DB(System):
         self.log.info("database ")
       
     def init_db(self):
-        db_dict = self.config['couchdb']
-        port = db_dict['port']
-        host = db_dict['host']
+        db_dict = self.config.get('couchdb')
+        port = db_dict.get('port')
+        host = db_dict.get('host')
         url = 'http://{}:{}/'.format(host, port)
 
         self.db_dict = db_dict
@@ -23,10 +23,10 @@ class DB(System):
         self.log.info("long-term memory system ok")
 
     def store_doc(self, doc):
-        id = doc['_id']
+        id = doc.get('_id')
         dbdoc = self.db[id]
         if dbdoc:
-            doc['_rev'] = dbdoc['_rev']
+            doc['_rev'] = dbdoc.get('_rev')
         else:
             doc.pop('_rev', None)
 
@@ -34,19 +34,19 @@ class DB(System):
 
        
     def get_auxobj_ids(self):         
-        view = self.db_dict['view']['auxobj']
+        view = self.db_dict.get('view').get('auxobj')
         
-        return [doc['id'] for doc in self.db.view(view)]
+        return [doc.get('id') for doc in self.db.view(view)]
     
     def get_red_doc(self, doc_id):
         doc = self.db[doc_id]
         red_doc = None
         if doc:
             if 'AuxObject' in doc:
-                red_doc = doc['AuxObject']
+                red_doc = doc.get('AuxObject')
             
             if 'CalibrationObject' in doc:
-                red_doc = doc['CalibrationObject']
+                red_doc = doc.get('CalibrationObject')
         else:
             self.log.error("no doc with id {}".format(doc_id))
 
@@ -58,20 +58,20 @@ class DB(System):
     def get_task_names(self, doc_id):         
         doc = self.get_red_doc(doc_id)
         if doc and 'Task' in doc:
-            return [task['TaskName'] for task in doc['Task']]
+            return [task.get('TaskName') for task in doc.get('Task')]
         else:
             return []
         
     def get_task(self, doc_id, task_name):         
         doc = self.get_red_doc(doc_id)
         if doc and 'Task' in doc:
-            tasks = doc['Task']
+            tasks = doc.get('Task')
             for task in tasks:
-                if task['TaskName'] == task_name:
+                if task.get('TaskName') == task_name:
                     break
 
             if 'Defaults' in doc:
-                defaults = doc['Defaults']       
+                defaults = doc.get('Defaults')       
                 task = self.replace_defaults(task=task, defaults=defaults)
 
             return task