@property
    def contributor(self):
        try:
            return u'%s %s' % (self.post_data['first_name'],
                               self.post_data['last_name'])
        except (TypeError, __HOLE__):
            # post_data may be None or missing a key
            return None
dataset/ETHPy150Open mozilla/addons-server/src/olympia/stats/models.py/Contribution.contributor