SIGINT is being handled very strangely in interactive shell

[bedilbek]

Summary

Expected Behavior

python3.12
Python 3.12.3 (main, Feb  4 2025, 14:48:35) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
KeyboardInterrupt
>>> 
>>> 
KeyboardInterrupt
>>> 
>>> 

In a normal interactive Python shell, when I press SIGINT, it just sends only one interrupt, which is a normal behavior

Actual Behavior (uv python interactive shell)

uv run python
Python 3.12.3 (main, Feb  4 2025, 14:48:35) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> 
KeyboardInterrupt
>>> 
>>> 
KeyboardInterrupt
>>> 
KeyboardInterrupt
>>> 
>>> 
KeyboardInterrupt
>>> 
KeyboardInterrupt
>>> 
>>> 

In the uv run interactive Python shell, when I press SIGINT for the first time, I get only an interrupt, which is okay, however, second, third, and subsequent SIGINT interrupt gets executed twice, so I get two interrupts in the strange console output. Also, after SIGINT key press, I guess Enter key gets pressed first, and then only interrupt, which feels even more bizarre.

Actual Behavior (docker uv python interactive shell)

docker run --rm -it ghcr.io/astral-sh/uv:python3.12-bookworm-slim uv run python
Python 3.12.10 (main, Apr 28 2025, 22:12:29) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> 
KeyboardInterrupt
>>> 
>>> 
KeyboardInterrupt
>>> 
KeyboardInterrupt
>>> 
>>> 
KeyboardInterrupt
>>> 
KeyboardInterrupt
>>> 
>>> 

So the same problem can be observed both from the Docker container and from the host

Platform

Ubuntu 24.04.2 LTS

Version

uv 0.7.3

Python version

Python 3.12.3 Python 3.12.10