Update app.py

app.py

@@ -9,6 +9,8 @@ TITLE = "<h1><center>Chat with Llama3-8B-Chinese-Chat-v2</center></h1>"
 
 DESCRIPTION = "<h3><center>Visit <a href='https://huggingface.co/shenzhi-wang/Llama3-8B-Chinese-Chat' target='_blank'>our model page</a> for details.</center></h3>"
 
+DEFAULT_SYSTEM = "You are Llama3-8B-Chinese-Chat-v2, finetuned from Llama3-8B-Instruct on Chinese-English dataset using the ORPO algorithm. You are a helpful assistant."
+
 TOOL_EXAMPLE = '''You have access to the following tools:
 ```python
 def generate_password(length: int, include_symbols: Optional[bool]):
@@ -50,7 +52,7 @@ model = AutoModelForCausalLM.from_pretrained("shenzhi-wang/Llama3-8B-Chinese-Cha
 
 @spaces.GPU
 def stream_chat(message: str, history: list, system: str, temperature: float, max_new_tokens: int):
-    conversation = [{"role": "system", "content": system}]
+    conversation = [{"role": "system", "content": system or DEFAULT_SYSTEM}]
     for prompt, answer in history:
         conversation.extend([{"role": "user", "content": prompt}, {"role": "assistant", "content": answer}])
 
@@ -115,8 +117,8 @@ with gr.Blocks(css=CSS) as demo:
             ),
         ],
         examples=[
-            ["我的蓝牙耳机坏了，我该去看牙科还是耳鼻喉科？", "You are a helpful assistant."],
-            ["小明有18支铅笔和24张纸，他想将它们分成每份相同的组，每组既有铅笔又有纸，问他最少可以分成几组，每组有多少支铅笔和多少张纸？", "You are a helpful assistant."],
+            ["我的蓝牙耳机坏了，我该去看牙科还是耳鼻喉科？", ""],
+            ["小明有18支铅笔和24张纸，他想将它们分成每份相同的组，每组既有铅笔又有纸，问他最少可以分成几组，每组有多少支铅笔和多少张纸？", ""],
             ["我的笔记本找不到了。", "扮演诸葛亮和我对话。"],
             ["我想要一个新的密码，长度为8位，包含特殊符号。", TOOL_EXAMPLE],
         ],