text: import datetime
  import getpass
  import os
  from utils import *
  import bcrypt
  from tabulate import tabulate
  import numpy as np
  
  from playhouse.sqlcipher_ext import *
  
  
  class Password(Model):
      name = TextField()
      username = TextField(null=True)
      password = TextField()
      timestamp = DateTimeField(default=datetime.datetime.now)
      updated = DateTimeField(null=True)
  
      class Meta:
          if not os.path.isfile('./7hyuax9xsjxfec7mk3uxvm22ajzwa3ds.db'):
              while True:
                  while True:
                      password_input0 = getpass.getpass(
                          "Please create a password: ")
                      password_input = getpass.getpass(
                          "Please confirm your password: ")
                      if password_input0 == password_input:
                          break
                      else:
                          print("The passwords don't match.")
  
                  input_entropy = entropy(list(password_input), 10)
                  input_ideal_entropy = entropy_ideal(len(password_input), 10)
                  entropy_ratio = 100*input_entropy/input_ideal_entropy
  
                  if len(password_input) < 8:
                      print("Error: your password must be at least 8 characters long.")
                  elif any(i in SPECIAL_CHARS for i in password_input) == False:
                      print(
                          "Error: your password must contain at least one special character.")
                  elif any(i in ONLY_LOWERCASE for i in password_input) == False:
                      print(
                          "Error: your password must contain at least one lower-case character.")
                  elif any(i in ONLY_UPPERCASE for i in password_input) == False:
                      print(
                          "Error: your password must contain at least one upper-case character.")
                  elif entropy_ratio < 85:
                      print("Error: your password is too simple.")
                  else:
                      break
  
              # Encode password
              password = str.encode(password_input)
              # Hash a password for the first time, with a randomly-generated salt
              hashed = bcrypt.hashpw(password, bcrypt.gensalt())
              f = open("37ttkpano4fu834f98bvpzdxnn3uxn9a", "w")
              # digest = hashlib.sha256(hashed).hexdigest()
              f.write(hashed.decode())
              f.close()
              is_auth = True
              db = SqlCipherDatabase('7hyuax9xsjxfec7mk3uxvm22ajzwa3ds.db', passphrase=password_input)
              database = db
          else:
              password_input = getpass.getpass('Enter the database password: ')
              password = str.encode(password_input)
              f = open("37ttkpano4fu834f98bvpzdxnn3uxn9a")
              hashed = str.encode(f.readline())
              # Check that an unhashed password matches one that has previously been hashed
              if bcrypt.checkpw(password, hashed):
                  print("The password entered is correct.")
                  db = SqlCipherDatabase('48cccca3bab2ad18832233ee8dff1b0b.db', passphrase=password_input)
                  database = db
                  is_auth = True
              else:
                  print("The password is incorrect.")
                  is_auth = False
  
  
  def create_password():
      try:
          print("Input the password identification name:")
          input_name = input()
          print("Input the username (press enter if not applicable):")
          input_username = input()
          print("Input the matching password:")
          input_password = input()
          Password.create(name=input_name, username=input_username,
                          password=input_password)
      except:
          print("An error occurred.")
      else:
          print("Password record created successfully!")
  
  
  def print_passwords():
      # try:
      print("Registered passwords:\n")
      d = np.zeros((Password.select().count(), 5), dtype=object)
      i = 0
      for password in Password.select():
          d[i, :] = [password.name, password.username, password.password,
                     password.timestamp, password.updated]
          i += 1
      print(tabulate(d, headers=["Id", "Username",
            "Password", "Created", "Updated"]))
      #print(f"Name: {password.name} | Username: {password.username} | Password: {password.password} | Created: {password.timestamp} | Updated: {password.updated}")
      # except:
      #    print("An error occurred.")
  
  
  def update_password():
      try:
          print("Input the password identification name to be updated:")
          input_name = input()
          password = Password.get(Password.name == input_name)
          print("Input the new password:")
          new_password = input()
          password.password = new_password
          password.updated = datetime.datetime.now()
          password.save()
      except:
          print("An error occurred.")
      else:
          print("Password updated successfully!")
  
  
  def delete_password():
      try:
          print("Input the password identification name to be deleted:")
          input_name = input()
          password = Password.get(Password.name == input_name)
          password.delete_instance()
      except:
          print("An error occurred.")
      else:
          print("Record deleted successfully!")