Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

Appearance settings

get_type_hints fails for dataclass in 3.14 #144190

Copy link
Copy link
@bfrandeen

Description

@bfrandeen
Issue body actions

Bug report

Bug description:

This code works in 3.13, but fails in 3.14:

from dataclasses import dataclass
from typing import get_type_hints


@dataclass
class MyHintedClass:
    my_attr: int = 1

    def __init__(self):
        self.hints = get_type_hints(self)


my_class = MyHintedClass()
print(my_class.hints)

Failure in 3.14:

~\py\pybug: uv run --python=3.14 python main.py                                                                                                                                                                                                     
Traceback (most recent call last):
  File "C:\Users\bfrandeen\py\pybug\main.py", line 13, in <module>
    my_class = MyHintedClass()
  File "C:\Users\bfrandeen\py\pybug\main.py", line 10, in __init__
    self.hints = get_type_hints(self)
                 ~~~~~~~~~~~~~~^^^^^^
  File "C:\Users\bfrandeen\AppData\Roaming\uv\python\cpython-3.14.2-windows-x86_64-none\Lib\typing.py", line 2401, in get_type_hints
    hints = _lazy_annotationlib.get_annotations(obj, format=format)
  File "C:\Users\bfrandeen\AppData\Roaming\uv\python\cpython-3.14.2-windows-x86_64-none\Lib\annotationlib.py", line 996, in get_annotations
    raise TypeError(f"{obj!r} does not have annotations")
TypeError: MyHintedClass(my_attr=1) does not have annotations

Works in older versions:

~\py\pybug: uv run --python=3.13 python main.py
Using CPython 3.13.2
Removed virtual environment at: .venv
Creating virtual environment at: .venv
Installed 6 packages in 190ms
{'my_attr': <class 'int'>}

CPython versions tested on:

3.14, 3.13

Operating systems tested on:

Windows, Linux

Linked PRs

Reactions are currently unavailable

Metadata

Metadata

Assignees

No one assigned

    Labels

    3.14bugs and security fixesbugs and security fixes3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixesdocsDocumentation in the Doc dirDocumentation in the Doc dirtopic-typing
    No fields configured for issues without a type.

    Projects

    Status
    Todo
    Show more project fields

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions

      Morty Proxy This is a proxified and sanitized view of the page, visit original site.