password_generator.py

import string 
import random

def generate_password(length, include_uppercase, include_numbers, include_special):
  if length < (include_uppercase + include_numbers + include_special):
    raise ValueError('Password length is too short for the specified criteria.')
  
  password = ''

  if include_uppercase:
    password += random.choice(string.ascii_uppercase)
  if include_numbers:
    password += random.choice(string.digits)
  if include_special:
    password += random.choice(string.punctuation)

  # Fill the remaining length with any allowed characters
  characters = string.ascii_lowercase
  if include_uppercase:
    characters += string.ascii_uppercase
  if include_numbers:
    characters += string.digits
  if include_special:
    characters += string.punctuation

  for _ in range(length - len(password)):
    password += random.choice(characters)

  password_list = list(password)
  random.shuffle(password_list)
  return ''.join(password_list)


def main():
  length = int(input('Enter password length: '))
  include_uppercase = input('Include uppercase letters? (y/n): ').lower() == 'y'
  include_numbers = input('Include numbers? (y/n): ').lower() == 'y'
  include_special = input('Include special characters? (y/n): ').lower() == 'y'
  try:
    password = generate_password(length, include_uppercase, include_numbers, include_special)
    print(password)
  except ValueError as e:
    print(e)


if __name__ == '__main__':
  main()