Bug report

Bug description:

In _curses.window.{getkey,get_wch}, we are checking for possible interrupting signals and say:

In no-delay mode, an exception is raised if there is no input

However, in getch, we say:

In no-delay mode, -1 is returned if there is no input.

In particular, I think we should also check for signals and possibly raise an exception if PyErr_CheckSignals fails, and otherwise return -1 as documented. (note that getch returns ERR in no-delay mode, see https://linux.die.net/man/3/wgetch).

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-134210: handle signals in _curses.window.getch #134326
• [3.14] gh-134210: handle signals in _curses.window.getch (GH-134326) #134783
• [3.13] gh-134210: handle signals in _curses.window.getch (GH-134326) #134784
• gh-134210: refactor signal handling in _curses.window.{get_wch,getkey} #134646