[Python] Why doesn't this code generate the random key?

Hi guys this a code I followed off a youtube video below this is the link https://youtu.be/IArt2Fgv644?si=UOly57utA04DBSyJ, what did I do wrong? after running it says process finished with exit code 0. but the random module is not working i'm trying to create a random key generator on Pycharm i'm new to coding.I currently have Python version 3.12.5 due to my current operating system windows 8.1 yes, lol.

import random

class Key:

def __init__(self, key= ''):
if key == '':
self.key= self.generate()
else:
self.key = key.lower()

def verify(self):
score = 0
check_digit = self.key[0]
check_digit_count = 0
chunks = self.key.split('-')
for chunk in chunks:
if len(chunk) != 4:
return False
for char in chunk:
if char == check_digit:
check_digit_count += 1
score += ord(char)
if score == 1772 and check_digit_count == 3:
return True
return False

def generate(self):
key = ''
chunk = ''
check_digit_count = 0
alphabet = 'abcdefghijklmnopqrstuvwxyz1234567890'
while True:
while len(key) < 25:
char = random.choice(alphabet)
key += char
if len(chunk) == 4:
key += '-'
chunk = ''
key = key[:-1]
if Key(key).verify():
return key
else:
key = ''

def __str__(self):
valid = 'invalid'
if self.verify():
valid = 'Valid'
return self.key.upper() + ':' + valid

key = Key('aaaa-bbbb-cccc-dddd-1111')
print(Key())

Continue reading...