model.py 文件源码

def generate_respondents_summary(self):
        all_uids_by_option = [option.people.keys() for option in self.options]
        all_uids = util.flatten(all_uids_by_option)
        num_respondents = len(set(all_uids))
        if num_respondents == 0:
            output = 'Nobody responded'
        elif num_respondents == 1:
            output = '1 person responded'
        else:
            output = '{} people responded'.format(num_respondents)
        return output