Update app.py

app.py

@@ -1,11 +1,12 @@
 import gradio as gr
+from flask import Flask, session
+app = Flask(__name__)
 
-user_name = ''
 
 def greet(name):
-    global user_name
-    user_name += name
+    session["user_name"] += name
+    user_name = session["user_name"]
     return "Hello " + user_name + "!!"
 
 iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+iface.launch(app=app)