Part 1 of Password Generator

import hashlib
import json
import os
import time
import secrets
import string

def load_db(db_path):
    # If the file provided does not exist, return and empty dict (a blank database)
    if not os.path.isfile(db_path):
        return {}
    with open(db_path, 'r') as reader:
        db = reader.read()
        return json.loads(db)

def pwd(db_pwd_path):
    if not os.path.isfile(db_pwd_path):
        return {}
    with open(db_pwd_path, 'r') as reader:
        db = reader.read()
        return json.loads(db)

def generator(db_pwd_path):
    time.sleep(1)
    print("Alright, let's begin")
    db = pwd(db_pwd_path)

complex_level = input("How hard do you want your password to be? 'easy' 'medium' 'hard': ")
    complex_level = complex_level.lower()

alphabet = string.ascii_letters + string.digits + string.punctuation
    pass_word = secrets.choice(string.ascii_lowercase)
    pass_word += secrets.choice(string.ascii_uppercase)
    pass_word += secrets.choice(string.digits)
    pass_word += secrets.choice(string.punctuation)

if complex_level == 'easy':
        for i in range(2):
            pass_word += secrets.choice(alphabet)
        char_list = list(pass_word)
        secrets.SystemRandom().shuffle(char_list)
        pass_word = ''.join(char_list)
        print("Secure Password is: ", pass_word)
        print("nice")
    elif complex_level == 'medium':
        for i in range(6):
            pass_word += secrets.choice(alphabet)
        char_list = list(pass_word)
        secrets.SystemRandom().shuffle(char_list)
        pass_word = ''.join(char_list)
        print("Secure Password is: ", pass_word)
        print("alright")
    elif complex_level == 'hard':
        for i in range(2):
            pass_word += secrets.choice(alphabet)
        char_list = list(pass_word)
        secrets.SystemRandom().shuffle(char_list)
        pass_word = ''.join(char_list)
        print("Secure Password is: ", pass_word)
        print("wow, calm down")
    else:
        print("Pick 'easy' or 'medium' or 'hard' next time")
        time.sleep(1)
        breakpoint()

website_info = {'website': input("Enter website/program for the password we just generated: "),
                    'password': pass_word}
    db[website_info['website']] = website_info
    # db[website_info['password']] = pass_word

# Update the database file
    with open(db_pwd_path, 'w') as writer:
        print('Updating the contents of the database')
        print(db)
        writer.write(json.dumps(db))

def login(db_path):
    print("Password Generator v2\n Sign in please:")
    username = input("Enter username: ")
    password = input("Enter password: ")

db = load_db(db_path)
    valid = True

# 1. Does the provided username exist?
    if db.get(username):
        user_pass = db.get(username)['secret']

# 2. Ok, we know the user's hashed password. Now let's hash the input and compare:
        if hashlib.sha224(password.encode('utf-8')).hexdigest() != user_pass:
            valid = False
    else:
        valid = False

if valid:
        generator('pwd.json')
    else:
        print("Invalid Password! or Username!")

def register(db_path):
    selection = input("Please choose: 'register' or 'login' ")
    selection = selection.lower()  # makes whatever input the user puts lowercase

if selection == 'register':
        user_info = {'name': input("Enter Username? "), 'secret': input("Enter Password? "),
                     'email': input("Enter Email? ")}

db = load_db(db_path)

# check to see if name is already taken
        if db.get(user_info['name']):
            raise Exception('Username already taken ({})'.format(user_info['name']))

# if it's not taken, create a slot for it in the DataBase/db
        db[user_info['name']] = user_info

# don't forget to hash the password
        user_info['secret'] = hashlib.sha224(user_info['secret'].encode('utf-8')).hexdigest()

# Update the database file
        with open(db_path, 'w') as writer:
            print('Updating the contents of the database')
            print(db)
            writer.write(json.dumps(db))
    elif selection == 'login':
        login(db_path)
    else:
        print("Invalid option. Please enter 'register' or 'login'")

Python Fiddle

Python Cloud IDE