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Reading QR Codes in Python

  • Last updated Apr 25, 2024

To read QR codes in Python, you can use the opencv-python library along with the pyzbar library, which is a wrapper for the ZBar barcode reader. Follow these steps to read a QR code using Python:

Install the Required Libraries

Install opencv-python and pyzbar library using pip:

pip install opencv-python
pip install pyzbar
 Read QR Code

Here's a simple example that demonstrates how to read a QR code image in python:

import cv2
from pyzbar.pyzbar import decode

def read_qrcode(image_path):
    # Read the image
    image = cv2.imread(image_path)

    # Convert the image to grayscale
    gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

    # Decode QR codes in the image
    decoded_objects = decode(gray)

    # Print information about each QR code
    for obj in decoded_objects:
        print("Type:", obj.type)


# Provide the path to the image containing the QR code
image_path = 'qrcode.png'

Make sure you have a QR code image (example qrcode.png) in the specified path. Then, execute the Python script. The script will print the type and data of the QR code in the console.