Update app.py

app.py

@@ -26,18 +26,6 @@ def respond(
     top_p,
     system_message,
 ):
-    try:
-        client = get_client(model_name)
-    except ValueError as e:
-        chat_history.append((message, str(e)))
-        return chat_history
-
-    messages = [{"role": "system", "content": system_message}]
-    for human, assistant in chat_history:
-        messages.append({"role": "user", "content": human})
-        messages.append({"role": "assistant", "content": assistant})
-    messages.append({"role": "user", "content": message})
-
     try:
         stream = client.chat_completion(
             messages,
@@ -50,7 +38,10 @@ def respond(
         for response in stream:
             if response.choices[0].delta.content is not None:
                 partial_message += response.choices[0].delta.content
-                chat_history = chat_history + [(message, partial_message)]
+                if len(chat_history) > 0 and chat_history[-1][0] == message:
+                    chat_history[-1] = (message, partial_message)
+                else:
+                    chat_history.append((message, partial_message))
                 yield chat_history
     except Exception as e:
         error_message = f"An error occurred: {str(e)}"