Commented arguments named type

[josephcomisi]

Hello,

I did not dive into the issue but this can still help, so here is what happens:

I use tox to run black, mypy and unittest.

I have dataclasses with several arguments. One of the arguments was commented and was named type, such as:

@dataclass
class A:
    first: int
    # type: int

Even though it was commented out, I have the following error message:
...: error: expected an indented block after class definition on line 190 [syntax]

I am not sure it is the intended behaviour. If it is, please disregard this issue.

[sobolevn]

Mypy works with comments like # type: in a special way.

You can:

1. Use # type: ignore comment to disable some errors
2. (in the past) it was possible to specify types of things with # type: YOUR_TYPE comments

So, this is why # type: int comment is not understood by mypy.
Generally, it is a good idea to remove commented code, see https://github.com/wemake-services/flake8-eradicate

[hauntsaninja]

Yeah, this is expected behaviour. Closing as a duplicate of #13177