code: def handle(self, *args, **options):
          
          user_model = get_user_model()
  
          if len(args) == 0:
              # find the first superuser, or staff member or user
              filters = [{"is_superuser": True}, {"is_staff": True}, {}]
              user = None
              for f in filters:
                  try:
                      user = user_model._default_manager.filter(**f).order_by("pk").first()
                      if user:
                          break
                  except FieldError as e:
                      pass
  
              if user is None:
                  raise CommandError("No users found!")
  
          elif len(args) == 1:
              # find the user with the USERNAME_FIELD equal to the command line
              # argument
              try:
                  user = user_model._default_manager.get_by_natural_key(args[0])
              except user_model.DoesNotExist as e:
                  raise CommandError("The user does not exist")
          else:
              raise CommandError("You passed me too many arguments")
  
          signer = TimestampSigner()
          signature = signer.sign(str(user.pk))
  
          self.stdout.write(reverse(login, args=(signature,)))
docs: With no arguments, find the first user in the system with the
          is_superuser or is_staff flag set to true, or just the first user in
          the system period.
  
          With a single argument, look for the user with that value as the
          USERNAME_FIELD value.
  
          When a user is found, print out a URL slug you can paste into your
          browser to login as the user.