NamedTuple

Typed version of collections.namedtuple.

Usage::

    class Employee(NamedTuple):
        name: str
        id: int

This is equivalent to::

    Employee = collections.namedtuple('Employee', ['name', 'id'])

The types for each field name can be retrieved by calling
annotationlib.get_annotations(Employee).  (The field names are also in
the _fields attribute, which is part of the namedtuple API.)
An alternative equivalent functional syntax is also accepted::

    Employee = NamedTuple('Employee', [('name', str), ('id', int)])