DavidCEllis · GitHub

Bug report

Bug description:

If there's an annotation with an incorrect attribute access, the AttributeError causes get_annotations to return an empty dictionary for the annotations instead of failing or returning a ForwardRef.

import typing
from annotationlib import get_annotations, Format
class Example2:
    real_attribute: typing.Any
    fake_attribute: typing.DoesNotExist
new_ann = get_annotations(Example2, format=Format.FORWARDREF)
print(f"{new_ann=}")
# This should fail, but instead returns an empty dict
value_ann = get_annotations(Example2, format=Format.VALUE)
print(f"{value_ann=}")
string_ann = get_annotations(Example2, format=Format.STRING)
print(f"{string_ann=}")

Output

new_ann={}
value_ann={}
string_ann={'real_attribute': 'typing.Any', 'fake_attribute': 'typing.DoesNotExist'}

I think this is due to _get_dunder_annotations catching AttributeError and returning an empty dict, intended for static types but catching this by mistake.

CPython versions tested on:

3.14

Operating systems tested on:

Linux

Linked PRs

Read the original on github.com ↗