def top_i_answers(self, i):
for j, a in enumerate(self.answers):<EOL><INDENT>if j <= i - <NUM_LIT:1>:<EOL><INDENT>yield a<EOL><DEDENT>else:<EOL><INDENT>return<EOL><DEDENT><DEDENT>
获取排名在前几位的答案.

        :param int i: 获取前几个
        :return: 答案对象，返回生成器
        :rtype: Answer.Iterable