attrs created classes does not support __init__ args tooltips

[gr4viton]

Issue

The tooltip for instantiation of attrs-style defined class is not showing arg variables.

Steps to reproduce

Define class via attrs

from attr import attrs, attrib
@attrs
class Class()
   a = attrib()
   b = attrib(default=42)

Tooltip for class initialization shows:

     (...)
Class(

It would be more usefull if the init args tooltip shown the actual generated args.

     (a, b=42)
Class(

Though, not sure how difficult it would be to search for @attrs wrapper and parse the vars.

Also the attr.make_class can be used, where the __init__ args are defined in form of dict, which can possibly be even more difficult to parse.

Output of “:verbose JediDebugInfo”

N/A

[davidhalter]

This goes into the direction of davidhalter/jedi#626

I suppose that it will take at least a year, but it's not going to be possible without a plugin structure.