This code will decode the QR code or barcode data from the PNG image using "pyzbar" and then print the decoded data as ASCII. In this we have to replace "your_image.png" with the path to our actual PNG file.

DecodeQR.py

from PIL import Image
from pyzbar.pyzbar import decode

image = Image.open("your_image.png")
decoded_objects = decode(image)

for obj in decoded_objects:
    print(obj.data.decode('ascii'))