Software Registration Key Generator – Python Tkinter GUI Tutorial 189

In this video we’ll build out a software registration key generator.

Let’s say you build some software that you want to sell, and you want your users to need a registration key in order to unlock the software.

This code will build a registration key in this general pattern:
aaaa-bbbb-cccc-dddd-1234

Randomly assigning letters or numbers to each of those digits of the key.

Python Code: register.py
(Github Code)

from tkinter import *
import random

root = Tk()
root.title('Codemy.com - Software Registration Key Generator')
root.iconbitmap('c:/gui/codemy.ico')
root.geometry("500x500")

# Generate Key
def generate():
	# Clear key label
	key_label.delete(0, END)
	verify_label.config(text="")

	# Set some defaults
	key = ''
	section = ''
	check_digit_count = 0
	alphabet = 'abcdefghijklmnopqrstuvwxyz1234567890'

	# key = aaaa-bbbb-cccc-dddd-1111 or 24 characters

	while len(key) < 25:
		# Randomly pick digit from alphabet
		char = random.choice(alphabet)
		# Add random choice to key
		key += char
		# Also add the random choice to the section blob
		section += char

		# Add in the dashes/hyphens
		if len(section) == 4:
			# add in a hyphen
			key += '-'
			# Reset the section to nothing
			section = ''
	# set key to all but the last digit
	key = key[:-1]

	# output the key
	key_label.insert(0, key)

# Create a button
generate_button = Button(root, text="Generate Key!", font=("Helvetica", 32), command=generate)
generate_button.pack(pady=50)

# Key Label
key_label = Entry(root, font=("Helvetica", 24), bd=0, bg="systembuttonface", width=25)
key_label.pack(pady=10, padx=50)

# Verify Label
verify_label = Label(root, text="Waiting...", font=("Helvetica", 32))
verify_label.pack(pady=10)

# Score Label
score_label = Label(root, text="Score: ", font=("Helvetica", 32))
score_label.pack(pady=10)

root.mainloop()