The prefered Syntax for a typed named tuple since 3.6 is
from typing import NamedTuple
class Point(NamedTuple):
x: int
y: int = 1 # Set default value
Point(3) # -> Point(x=3, y=1)
Edit
Starting Python 3.7, consider using dataclasses
(your IDE may not yet support them for static type checking):
from dataclasses import dataclass
@dataclass
class Point:
x: int
y: int = 1 # Set default value
Point(3) # -> Point(x=3, y=1)