корявый пассген

import random

letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']

numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']

symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']

rand = [letters, numbers, symbols]

print("Welcome to the PyPassword Generator!")

​

​

​

class PassGen:

    def __init__(self):

        self.password = []

​

    def generator(self, num_letters=4, num_symbols=3, num_numbers=3):

        sum_pass_mustbe = num_numbers + num_symbols + num_letters

        if num_letters > 0 and len(self.password) < sum_pass_mustbe:

            letter_ex = 0

            while letter_ex < num_letters:

                self.password.append(random.choice(letters))

                letter_ex += 1

        if num_symbols > 0 and len(self.password) < sum_pass_mustbe:

            symbols_ex = 0

            while symbols_ex < num_symbols:

                self.password.append(random.choice(symbols))

                symbols_ex += 1

        if num_numbers > 0 and len(self.password) < sum_pass_mustbe:

            numbers_ex = 0

            while numbers_ex < num_numbers:

                self.password.append(random.choice(numbers))

                numbers_ex += 1

        random.shuffle(self.password)

        # final_password = ""

        # for i in self.password:

        #     final_password += i