Update conversation.py

conversation.py

@@ -73,3 +73,7 @@ class conversationAgent:
         encoding = tiktoken.encoding_for_model(self.envVariables.openai_model())
         num_tokens = len(encoding.encode(self.memory.buffer_as_str))
         return num_tokens
+
+    def clear_memory(self):
+        self.memory.clear()
+        return None