Update app.py

app.py

@@ -1,7 +1,9 @@
 import gradio as gr
 
 def greet(name):
-    return "Hello " + name + "!!"
+    return "Hello " + name + "!"
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+demo = gr.Interface(fn=greet, inputs="text", outputs="text")
+    
+if __name__ == "__main__":
+    demo.launch()