models.py 文件源码

def _set_username(self):
        """Normalize username to remove none ascii chars and validate."""
        self.username = unidecode(self.user.username)

        # If username is invalid or username account already exists create
        # a new username. Lendable must be available for checkout by user
        # to hit this code.
        if not self._validate_username() or \
                self.amazon_account_utils.iam_user_exists(self.username):
            self.username = get_random_string(length=20)