Creating a QR Code with Python

QR codes, or Quick Response codes, are two-dimensional barcodes that can be read by smartphones with a QR code reader. They are commonly used for sharing URLs, contact information, and other data. In this tutorial, I will show you how to create a QR code using Python.

To create a QR code in Python, we can use the qrcode library. If you don’t already have the library installed, you can install it using pip:

pip install qrcode

Once you have the library installed, you can start creating QR codes. Here’s a simple example of how to create a basic QR code with some text:

import qrcode

data = "https://www.example.com"
qr = qrcode.QRCode(
    version=1,
    error_correction=qrcode.constants.ERROR_CORRECT_L,
    box_size=10,
    border=4,
)
qr.add_data(data)
qr.make(fit=True)

img = qr.make_image(fill_color="black", back_color="white")
img.save("example.png")

In this example, we first import the qrcode library. We then define the data that we want to encode in the QR code. In this case, we are using a URL as the data.

Next, we create a QRCode object with some parameters. The version parameter specifies the size of the QR code, the error_correction parameter specifies the error correction level, the box_size parameter specifies the size of each box in the QR code, and the border parameter specifies the size of the border around the QR code.

We then add the data to the QR code object using the add_data() method and call the make() method to generate the QR code.

Finally, we create an image of the QR code using the make_image() method, specifying the fill color and background color, and save the image to a file.

You can customize the QR code further by changing the parameters of the QRCode object. For example, you can change the error correction level, the size of the QR code, or the colors of the QR code.

That’s it! You have successfully created a QR code using Python. You can now use the generated image in your projects or print it out for offline use.