Wrong Signature for Enum with Specific Dataclass Mixin Scenario

Note: I was thinking about putting this on pyright but it said standard library problems are more suited here, so I'll give it a shot.

I was trying to code an enum with a dataclass mixin where each value is overridden through the first string variable for easier referencing (rather than a dict from str to enum).

from dataclasses import dataclass
from enum import Enum, auto

@dataclass(frozen=True)
class SampleMixin:
    a_string: str
    a_number: int

class SampleEnum(SampleMixin, Enum):
    def __new__(cls, value: str, *_):
        obj = object.__new__(cls)
        obj._value_ = value

        return obj

    foo = "foo", 1
    bar = "bar", 2

class SampleEnum2(Enum):
    foo = auto()
    bar = auto()

baz = SampleEnum("foo")
qux = SampleEnum2("foo")

baz still gets SampleEnum.foo right, but the function signature is incorrectly identified. Ideally, it should be closer to SampleEnum2's function signature.

I'm open to workarounds at the meantime. The code runs correctly, it's just that the inferred signature I got was wrong.

Code sample in pyright playground.

从 Python 复现和链接的 pyright playground 开始，比较为 SampleEnum 和 SampleEnum2 推断出的签名。跟踪 typeshed 中标准库 enum 和 dataclass 的相关 typing 定义，并在 dataclass-mixin 情况生成预期的 enum 构造函数签名且不改变运行时行为时确认完成。