import gradio as gr

def greet(name):
    return "Hello " + name + "!"

with gr.Blocks() as demo:
    output = gr.Textbox(label="输出")
    name = gr.Textbox(label="输入")
    greet_btn = gr.Button("提交")
    greet_btn.click(fn=greet, inputs=name, outputs=output, api_name="greet")

demo.launch()