Recognize new-style attrs decorators in too-few-public-methods check (#9346)
Beginning with attrs 21.1.0, the recommended way to use attrs is through
`import attrs` and using `attrs.define`/`attrs.frozen`, not `import
attr` and `attr.s` or `attr.attrs`. Pylint does understand `attr.attrs`
(#2988), but new-style uses of attrs are not understood to be data class
decorators.
Modify `_is_exempt_from_public_methods` to recognize `attrs.define` and
`attrs.frozen` in a similar way as is currently done with
`dataclasses.dataclass`.
Closes #9345.
3 files changed
