Remove redundant variables

chatterbot/chatterbot.py

@@ -100,7 +100,7 @@ def get_response(self, input_item, session_id=None):
         # Learn that the user's input was a valid response to the chat bot's previous output
         previous_statement = self.conversation_sessions.get(
             session_id
-        ).conversation.get_last_response_statement()
+        ).get_last_response_statement()
         self.learn_response(statement, previous_statement)
 
         self.conversation_sessions.update(session_id, (statement, response, ))

chatterbot/conversation/session.py

@@ -25,10 +25,11 @@ def add(self, statement):
         statement.conversation_id = self.conversation_id
         self.storage.update(statement)
 
+
 class Session(object):
     """
     A single chat session.
-    TODO: Rename to Conversation
+    In the future this class will be renamed to `Conversation`.
     """
 
     def __init__(self, storage):
@@ -42,9 +43,18 @@ def __init__(self, storage):
         self.id = str(self.uuid)
 
         # The last 10 statement inputs and outputs
-        self.conversation = ResponseQueue(maxsize=10)
         self.statements = StatementManager(self.storage, self.id)
 
+    def get_last_response_statement(self):
+        """
+        Return the last statement that was received.
+        """
+        statements = self.statements.all()
+        if statements:
+            # Return the latest output statement (This should be ordering them by date to get the latest)
+            return statements[-1]
+        return None
+
 
 class ConversationSessionManager(object):
     """
@@ -77,6 +87,5 @@ def update(self, session_id, conversance):
         """
         session_id = str(session_id)
         if session_id in self.sessions:
-            self.sessions[session_id].conversation.append(conversance)
             for statement in conversance:
                 self.sessions[session_id].statements.add(statement)