Update app.py

app.py

@@ -1,3 +1,4 @@
+from pyexpat.errors import messages
 import gradio as gr
 from huggingface_hub import InferenceClient
 import spaces
@@ -8,9 +9,10 @@ client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 @spaces.GPU
 
 
-def predict(show_copy_button) -> list[list[str | tuple[str] | tuple[str, str] | None] | tuple] | None : 
-    value show_copy_button = True 
-    return value
+
+
+
+
     
 def respond(
     message,
@@ -19,6 +21,8 @@ def respond(
     max_tokens,
     temperature,
     top_p,
+    show_copy_button=True,
+
 ):
     messages = [{"role": "system", "content": system_message}]
 
@@ -48,6 +52,13 @@ def respond(
         response += token
         yield response
 
+if messages == "" : 
+    raise gr.Error("votre message est vide ")
+else : None 
+
+
+
+
 """
 For information on how to customize the ChatInterface, peruse the gradio docs: https://www.gradio.app/docs/chatinterface
 """
@@ -63,6 +74,7 @@ demo = gr.ChatInterface(
             value=0.95,
             step=0.05,
             label="Top-p (nucleus sampling)",
+            show_copy_button = True
 
         ),
     ],