QR code generator from Text using Tkinter in Python

Recently I have built a simple QR code generator in Tkinter. I thought it will be fun sharing the tutorial here with you here.

In order to build this QR code generator, we will need these packages:

1. Tkinter (It comes along with Python, so you do not need to install it separately)
2. pyqrcode
3. pypng
4. pillow

So at first, let’s install those libraries one by one using pip

pip install pyqrcode
pip install pypng
pip install pillow

Once you install these one by one, then start the coding.

You can also check: How to set Tkinter Label text through variables

Let me first explain the steps:

• Create a Tkinter window
• Add an entry box or input box so that we can take text input from that.
• Create a button for the submission of that text.
• Create a function and run that when the button is pressed.
  In that function, we will create the QR code image and save it in our directory.
• Then in the same function, we will show that image in a previously created Label of Tkinter.

Now let’s check the full code:

import tkinter as tk
import pyqrcode
from PIL import Image, ImageTk
newWindow = tk.Tk()
qr_label = None
def create_qr():
    myString = entry.get()
    my_qr = pyqrcode.create(myString)
    my_qr.png("my_qr.png", scale=8)
    print(myString)
    qr_image = Image.open("my_qr.png")
    qr_photo = ImageTk.PhotoImage(qr_image)
    
    # Update the label with the new image
    qr_label.config(image=qr_photo)
    qr_label.image = qr_photo
newWindow.geometry("700x700")
entry = tk.Entry(newWindow, width=50)
entry.pack()
myButton = tk.Button(text="Get QR code image", command= create_qr)
myButton.pack()
qr_label = tk.Label(newWindow)
qr_label.pack()
newWindow.mainloop()

Output: