app.py

import gradio as gr

def Main(name):
  
    msg = "hello " + name        
    return msg

name = gr.inputs.Textbox(label="Name",lines=1, placeholder="Enter your name")
labelOutput = gr.outputs.Label(num_top_classes=None, type="auto", label="")

iface = gr.Interface(fn=Main
    , inputs=[name]
    , outputs=[labelOutput]
    , title = "DEMO"
)

#iface.launch(share = False,enable_queue=True, show_error =True, server_port= 7861)
iface.launch(share = False,enable_queue=True, show_error =True)