app.py

import gradio as gr

def greet(name):
    if not name:
        return "請輸入名字！"
    return f"你好，{name}！很高興認識你。"

demo = gr.Interface(fn=greet, inputs="text", outputs="text", title="問候產生器", description="輸入你的名字，看看我怎麼回應你！")
demo.launch()