init with demo code

app.py

@@ -1,10 +1,8 @@
 import gradio as gr
 
-def echo(text, request: gr.Request):
-    if request:
-        print("Request headers dictionary:", request.headers)
-        print("IP address:", request.client.host)
-        print("Query parameters:", dict(request.query_params))
-    return str(request.url)
+def greet(name):
+    return "Hello " + name
 
-io = gr.Interface(echo, "textbox", "textbox").launch()
+demo = gr.Interface(fn=greet, inputs="text", outputs="text")
+
+demo.launch()