Python script to decode a QR code using OpenCV

read_qr.py

import cv2

filename = "/path/to/some_image.png"
image = cv2.imread(filename)

# Docs are here: https://docs.opencv.org/3.4/de/dc3/classcv_1_1QRCodeDetector.html
detector = cv2.QRCodeDetector()

data, vertices_array, binary_qrcode = detector.detectAndDecode(image)
if vertices_array is not None:
     print("QRCode data:")
     print(data)
 else:
     print("error no data")

# Sample output:
# QRCode data:
# otpauth://totp/Example%20Company%3AJohn.Doe%40example.com?secret=aaaabbbbcccceee1123m&issuer=Google