Update first launch commands to deliver the usage of ";" and app, path_to_local_server, share_url = iface.launch()

demo/hello_world/run.py

@@ -7,4 +7,4 @@ def greet(name):
 
 iface = gr.Interface(fn=greet, inputs="text", outputs="text")
 if __name__ == "__main__":
-    iface.launch()
+    iface.launch();

demo/hello_world_2/run.py

@@ -11,4 +11,5 @@ iface = gr.Interface(
     outputs="text",
 )
 if __name__ == "__main__":
-    iface.launch()
+    app, path_to_local_server, share_url = iface.launch()
+

demo/hello_world_3/run.py

@@ -14,4 +14,5 @@ iface = gr.Interface(
     outputs=["text", "number"],
 )
 if __name__ == "__main__":
-    iface.launch()
+    app, path_to_local_server, share_url = iface.launch()
+