create app.py

git add app.py
git commit -m "Add application file"
git push

app.py

@@ -0,0 +1,11 @@
+import gradio as gr
+
+def greet(name):
+    return "Hello " + name + "!!"
+
+iface = gr.Interface(fn=greet, inputs="text", outputs="text")
+iface.launch()
+
+git add app.py
+git commit -m "Add application file"
+git push