Update app.py

app.py

@@ -312,6 +312,8 @@ if __name__ == "__main__":
                 break
             except Exception as e:
                 print(f"An error occurred: {str(e)}")
+        
+        print("Thank you for using the Python App Builder. Goodbye!")
 
     def _print_welcome_message(self):
         print("Welcome to the Python App Builder!")
@@ -331,20 +333,15 @@ if __name__ == "__main__":
 
     def launch_app(self):
         demo = self.build_app()
+        print(f"Demo object type: {type(demo)}")
         demo.launch()
 
 def main():
     try:
         app = App()
-        demo = app.build_app()
-        demo.launch()
+        app.run()
     except Exception as e:
-        print(f"Error launching app: {e}")
-
-def launch_app(self):
-    demo = self.build_app()
-    print(f"Demo object type: {type(demo)}")
-    demo.launch()
+        print(f"Error running app: {e}")
 
 if __name__ == "__main__":
     main()