<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def risk_score(self, domains):
 """Performs Umbrella risk score analysis on the input domains Args: domains: an enumerable of domains Returns: An enumerable of associated domain risk scores """

        api_name = 'opendns-risk_score'
        fmt_url_path = u'domains/risk-score/{0}'
        return self._multi_get(api_name, fmt_url_path, domains)