from operator import attrgetter
from collections import namedtuple
Person = namedtuple('Person', 'name age score')
seq = [Person(name="nick", age=23, score=100),
Person(name="bob", age=25, score=200)]
Sort list by name
sorted(seq, key=attrgetter('name'))
Sort list by age
sorted(seq, key=attrgetter('age'))