Update app.py

app.py

@@ -29,7 +29,18 @@ if not os.path.exists(UPLOAD_FOLDER):
 app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
 
 
-
+class ConversationBufferMemory:
+    def __init__(self, max_size):
+        self.memory = []
+        self.max_size = max_size
+
+    def add_to_memory(self, interaction):
+        self.memory.append(interaction)
+        if len(self.memory) > self.max_size:
+            self.memory.pop(0)
+
+    def get_memory(self):
+        return self.memory
 conversation_memory = ConversationBufferMemory(max_size=2)
 
 account_sid = os.environ.get('TWILIO_ACCOUNT_SID')