stubgen with attrs class not producing expected __init__.py output

[cazador481]

When I generate stubs using mypy's stubgen I find that I am forced to use the attrib = attr.ib(...) to get the stub for init to have the attributes in them. Even then the typing information for the attributes are wrong.

When I do

@attr.s(auto_attribs = True)
class Dummy:
  var: str

and run stubgen against it.
The stub I get looks like

def __init__(self)->None

I expect

def __init__(self, var: str)->None

If I do

@attr.s()
class Dummy:
  var: str = attr.ib()
  var2 = attr.ib(type:str)

I get closer to the expected output, but it is missing the type information

def __init__(self, var: Any, var2: Any)->None

[ilevkivskyi]

Hm, this looks like a bug. But maybe a better behavior would be to preserve the class decorator completely, since attrs are treated in quite special way by mypy.

[cdce8p]

This was fixed in #18418 (Included in the next release.) and will be further improved by #18430.

Note that you cannot use the shorthand since mypy doesn't resolve it. It will work with attr.attrs / attrs.define and attr.attrib / attrs.field.