def setSyntax(self, syntax):
        """Choose smart indentation algorithm according to syntax"""
        self._smartIndenter = self._chooseSmartIndenter(syntax)
def expiration_datetime(self):
        """Datetime that the verification will expire. """
        days_good_for = settings.VERIFY_STUDENT["DAYS_GOOD_FOR"]
        return self.created_at + timedelta(days=days_good_for)