app.py

import gradio as gr
import zxingcpp
import cv2

def decode(im):
    img = cv2.imread(f'{im}')
    results = zxingcpp.read_barcodes(img)

    print (results[0].text)
    return results[0].text



with gr.Blocks() as app:
    in_im = gr.Image(label="QR Image to Decode")
    dec_btn = gr.Button("Decode QR")
    text_out = gr.Textbox(label="Decoded Text")    
    choose_color = gr.ColorPicker()
    
    dec_btn.click(decode,in_im,text_out)
app.queue(concurrency_count=10).launch()