KOS_OP_CALL_ATTR_NAMES

• Style: EXTRA. Schema: CONST (attr name), CONST (kwarg names tuple), COUNT (npos), NOARG.

• Stack: [..., obj, pos_0, ..., pos_{N-1}, kwd_val_0, ..., kwd_val_{M-1}] → [..., result]. obj.name resolves as CALL_ATTR describes; the call then proceeds like CALL_NAMES. The kwarg names tuple and attr name are in the constant pool (EXTRA row), not on the stack.

• Compiler form: Emitted by compile/call-attr when the call has keyword arguments and no *: or **:.