Update app.py

app.py

@@ -1,7 +1,21 @@
 import gradio as gr
+from flask import Flask, request
+  
+app = Flask(__name__)
 
 def greet(name):
     return "Hello " + name + "!!"
+ 
+@app.route('/receive_msg', methods=['POST','GET'])
+def webhook():
+   if request.args.get("hub.mode") == "subscribe" and request.args.get("hub.challenge"):
+       if not request.args.get("hub.verify_token")== "EAAMjTT3ZC7NUBAEtTAhYFiaY6g6DkZCrhYnnNLY0QKiP2yxHfTiNkJSUBKrZB59pzv8fYusfaIqRZBrhVdRNWE3Om3SH4PUcXe3mMRkVU9g545CorZARHgqMxjQVyjLPmF0eTjJtTQSBUR1PTaq8WJhlZAZC6YORZCZAM3TMLFawCGauAHCUPWxBz5sGGoZAjkVua9bTw6PXV58tEYXRZAnVCak":
+           return "Verification token missmatch", 403
+       return request.args['hub.challenge'], 200
+   return "Hello world", 200
+ 
+if __name__ == "__main__":
+   app.run(debug=True)
 
 iface = gr.Interface(fn=greet, inputs="text", outputs="text")
 iface.launch()