django tables2 custom column

class PersonColumn(tables.Column):
    attrs = {
        'td': {
            'data-first-name': lambda record: record.first_name
            'data-last-name': lambda record: record.last_name
        }
    }
    def render(self, record):
        return '{} {}'.format(record.first_name, record.last_name)

class Table(tables.Table):
    person = PersonColumn()