@modify_site
    def create_item(self, url):
        aliases_limit = self.site.aliases_limit
        if (aliases_limit is not None and aliases_limit >= self.count()):
            raise LimitExceeded('Aliases limit exceeded')
        if len(url) > self.ALIAS_LEN_LIMIT:
            raise ValidationError('Url too long')

        url = url.strip().lower()
        (valid, error) = url_utils.validate_site_url(url)
        if not valid:
            raise ValidationError('Invalid url: ' + error)
        url = url_utils.remove_default_port(url)
        if self.find_item_by_url(url):
            raise ValidationError('Alias with this url already exists')
        return self._do_create_item(url=url)
dataset/ETHPy150Open wrr/wwwhisper/wwwhisper_auth/models.py/AliasesCollection.create_item/swapped operands of `>=`