app1.py

import gradio as gr
with gr.Blocks() as demo:
    def inp1(txt1):
        img1=txt1+"txt1-added"
        return img1
    def inp2(img1):
        out1=img1+"img1-added"
        return out1
    prompt =gr.Textbox()
    img1=gr.Textbox()
    out1=gr.Textbox()

    btn1=gr.Button()
    btn1.click(inp1,prompt,img1).then(inp2,img1,out1)
demo.launch(share=False)