Bug Report

When working with the wave module of the standard library, valid code from mypy <0.950 works but errors with
error: Argument 1 to "setparams" of "Wave_write" has incompatible type "waveparams"; expected "_wave_params"
on 0.950+
To Reproduce

Using Example code

# bug_report.py
import wave
import collections

waveparams = collections.namedtuple(
    "waveparams",
    "nchannels, sampwidth, framerate, nframes, comptype, compname",
)

with wave.open("test.wav", "wb") as wav_file:
    params = waveparams(
        nchannels=1,
        sampwidth=2,
        framerate=16_000,
        nframes=0,
        comptype="NONE",
        compname="NONE",
    )
    wav_file.setparams(params)

running mypy an older version (say 0.931) it says no issues. but using a fully up to date version throws and error of
error: Argument 1 to "setparams" of "Wave_write" has incompatible type "waveparams"; expected "_wave_params"

I am not sure why they would be 'incompatible' here. My team was making a namedtuple to make up for the fact that wav_file.setparameters just took a raw untyped tuple as input.

Expected Behavior

The named tuple here does match the required fields ofr setparams of Wave_write object from the stdlib so it should pass.

Actual Behavior

On newer versions of mypy this errors

Your Environment

• Python version used: 3.8
• Operating system and version: Linux