from typing import Sequence
from annotationlib import Format, get_annotations
class A:
    x: fails[Sequence, undef]
    y: fails[list, undef]
    z: works[list, list]
x_anno = get_annotations(A, format=Format.FORWARDREF)["x"]
y_anno = get_annotations(A, format=Format.FORWARDREF)["y"]
z_anno = get_annotations(A, format=Format.FORWARDREF)["z"]
fails = dict
works = dict
print(x_anno.evaluate(format=Format.FORWARDREF))
print(y_anno.evaluate(format=Format.FORWARDREF))
print(z_anno.evaluate(format=Format.FORWARDREF))

dict[Sequence, undef]
dict[list, undef]
dict[list, list]

ForwardRef('fails[__annotationlib_name_1__, undef]', is_class=True, owner=<class '__main__.A'>)
ForwardRef('fails[__annotationlib_name_1__, undef]', is_class=True, owner=<class '__main__.A'>)
dict[list, list]