Taichi Nakatani

The solution in e13b1_namedtuple_records.py throws an error: `KeyError: 'last'` In the solution below: ``` def format_sort_records(list_of_tuples): output = [] template = '{last:10} {first:10} {distance:5.2f}' for person in sorted(list_of_tuples, key=operator.attrgetter('last', 'first')):...