collections-named-tuple (PYI024): Documented fix is not equivalent #16492
Description
Summary
From the doc:
from collections import namedtuple
person = namedtuple("Person", ["name", "age"])Use instead:
from typing import NamedTuple
class Person(NamedTuple):
name: str
age: intBut that's not equivalent! Since the variable name person differs from the class name Person.
For this to be equivalent:
from collections import namedtuple
person = namedtuple("Person", ["name", "age"])
Rect = namedtuple("Rect", ["x", "y"])This would be used:
from typing import NamedTuple
class person(NamedTuple):
__name__ = "Person"
name: str
age: int
class Rect(NamedTuple):
x: int
y: intor
from typing import NamedTuple
class Person(NamedTuple):
name: str
age: int
person = Person # old name
class Rect(NamedTuple):
x: int
y: intI wouldn't recommend that usage. But backwards compatibility is important in libraries, where NamedTuples matter more.