import collections
Worker = collections.namedtuple('Worker', 'name age profession')
Tom = Worker(name='Tom', age=45, profession='Programmer')
print(Tom)
Tom = Tom._replace(profession='Scientist')
print(Tom)
print(Tom[0])
print(Tom[1])
print(Tom[2])
'''
run:
OrderedDict([('name', 'Tom'), ('age', 45), ('profession', 'Programmer')])
Tom
45
Programmer
'''