Bug report

Bug description:

 % ./python.exe 
Python 3.14.0a0 (heads/main:e12a6780bb, May 22 2024, 13:54:40) [Clang 14.0.0 (clang-1400.0.29.202)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> def f(x: y): pass
... 
>>> f.__annotations__
{'x': 'y'}

This likely happens because the code is exec()'ed in a file that has the future import; exec() inherits the __future__ state from the file where it's called (a questionable feature but that's how it is).

For what it's worth, PEP 649 explicitly says the REPL should continue to use "stock" semantics: https://peps.python.org/pep-0649/#interactive-repl-shell.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-119443: Turn off from __future__ import annotations in REPL #119493
• [3.13] gh-119443: Turn off from __future__ import annotations in REPL (GH-119493) #119697