Local variable 'pes' referenced before assignment error, how to fix?

Question

Python

Traceback (most recent call last):
  File "reader.py", line 34, in <module>
    log()
  File "reader.py", line 15, in log
    if pes == True:
UnboundLocalError: local variable 'pes' referenced before assignment

the code:

names = '../names.txt'
passwords = '../passwords.txt'
namee = False
pes = True

def log():
  name = input('Введите логин: ')
  passs = input('Введите пароль: ')
  for num, line in enumerate(namesr, 1):
    if name == line:
      namee = True
  for num, line in enumerate(passwordsr, 1):
    if passs == line:
      pes = True
  if pes == True:
    if namee == True:
      print('Login succesful!!')
def reg():
  myname = input('Введите ваше имя (Eng): ')
  mypass = input('Введите вашь пароль (Eng): ')
  if(myname == mypass):
    print("Использование пароля вашем логином запрещено!!!")
    reload()
  namesr.write(myname)
  passwordsr.write(mypass)
  print("Аккаунт Зарегистрирован, вход.....")
  log()
def reload():
  reg()
namesr = open(names, mode='r+', encoding='utf-8')
passwordsr = open(passwords, mode='r+', encoding='utf-8')
reglog = input('Hello, ты Зарегистрирован? (Y/N) : ')
if reglog == "Y":
  log()
elif reglog == "N":
  reg()

Answer 1

Define local variable pes before use