Update app.py

app.py

@@ -1,9 +1,11 @@
 import gradio as gr
 
-
+def test_function(): 
+    return "hello world"
+    
 # Set up interface
 ui = gr.Interface(
-    fn=generate,
+    fn=test_function,
     inputs=[
         gr.Textbox(
             label="Query",