get_type_hints() fails on TypedDict inheriting from a generic TypedDict under PEP 563 #138949
Description
Bug report
Bug description:
This fails:
from __future__ import annotations
import typing
class TD1[T](typing.TypedDict):
a: T
class TD2(TD1):
pass
print(typing.get_type_hints(TD2))$ uv run --python=3.13 sample3.py
Traceback (most recent call last):
File "/Users/jelle/py/cpython/sample3.py", line 9, in <module>
print(typing.get_type_hints(TD2))
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/opt/homebrew/Cellar/python@3.13/3.13.7/Frameworks/Python.framework/Versions/3.13/lib/python3.13/typing.py", line 2461, in get_type_hints
value = _eval_type(value, base_globals, base_locals, base.__type_params__)
File "/opt/homebrew/Cellar/python@3.13/3.13.7/Frameworks/Python.framework/Versions/3.13/lib/python3.13/typing.py", line 474, in _eval_type
return t._evaluate(globalns, localns, type_params, recursive_guard=recursive_guard)
~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/Cellar/python@3.13/3.13.7/Frameworks/Python.framework/Versions/3.13/lib/python3.13/typing.py", line 1081, in _evaluate
eval(self.__forward_code__, globalns, localns),
~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<string>", line 1, in <module>
NameError: name 'T' is not defined
Also reproduces on 3.12 and on the latest RC of 3.14.
(Got here while investigating #137226 (comment), but since this variant is a longstanding bug we don't need to fix it for 3.14.0. I want to record and eventually fix it though.)
CPython versions tested on:
CPython main branch, 3.15, 3.14, 3.13, 3.12
Operating systems tested on:
macOS