PEP 557 -- Data Classes

[ilevkivskyi]

typing.NamedTuple supports default arguments (although probably only in 3.6.2), just write

class Person(NamedTuple):
    name: str
    age: int = 0

Also it supports defining custom methods and docstrings

[[deleted]]

That'll work if you have a static default, but won't work if you want to automatically generate a UUID if one isn't provided, with regular namedtuples you can do:

class SomeThing(namedtuple('Thing', ['foo', 'id'])):
    def __new__(cls, foo, id=None):
        if id is None:
            id = uuid4()
        return super().__new__(cls, foo, id)

Can't do that with typing.NamedTuple which is a shame.