Bug: NamedTuple doesn't work after cythonization

[verailina]

I have some module defining a NamedTuple:

nmt.py:

from typing import NamedTuple

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

and a simple setup.py:

from distutils.core import setup
from Cython.Build import cythonize

setup(ext_modules=cythonize("nmt.py"))

I build the module like this

python setup.py build_ext --inplace

The result class Employee can't be properly instantiated:

>>> from nmt import Employee

>>> Employee("a", 1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: __new__() takes 1 positional argument but 3 were given

>>> Employee("a")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: __new__() takes 1 positional argument but 2 were given

>>> Employee()
Employee()

[scoder]

Duplicate of #2552.

[beruhan]

does any one has alternative plan? this usage is heavily used in the project.，and I don't know how to