Update app.py

app.py

@@ -1,7 +1,12 @@
 import gradio as gr
 
-def greet(name):
-    return "Hello " + name + "!!"
+def reverse_text(text):
+    return text[::-1]
 
-demo = gr.Interface(fn=greet, inputs="text", outputs="text")
-demo.launch()
+app = gr.Interface(fn = reverse_text,
+                   inputs = gr.Textbox(label="Enter text to reverse"),
+                   outputs = "text",
+                   title="Text Reverser",
+                   description="Type something and see it reversed!")
+
+app.launch()