QR Code Generator in Python with Source Code

Let’s create a simple Python script that generate a QR code. We can use the python “qrcode” library for generating QR code images.

pip install qrcode

This code generates a QR code with the data “https://www.mmkernel.com” and saves it as a PNG image with the filename “qr_code.png”.

import qrcode

# Creating an instance of QRCode class
qr = qrcode.QRCode(
    version=1,
    box_size=10,
    border=5
)

# Adding data to the instance 'qr'
data = "https://www.mmkernel.com"
qr.add_data(data)
qr.make(fit=True)

# Create and save the QR image
img = qr.make_image(fill_color="black", back_color="white")
img.save("qr_code.png")

Output:

Now let’s take a look at the code:

• The version argument specifies the size of the QR code: version = 1 is the smallest, version = 40 is the largest
• The box_size argument specifies the size of each box in the QR code
• The border argument specifies the size of the border around the QR code.
• The fill_color and back_color arguments specify the colors of the boxes and the background, respectively.

You can change the line number 11 with:

data = input("Change me")

This way, you can enter manually the data you want to be generated (some text, number, link, etc…)