HDTV no terminal output about hdtv HOT 6 CLOSED

What is your operating system, python version (e.g., run python --version) and prompt_toolkit version (e.g., run python -c "import prompt_toolkit; print(prompt_toolkit.__version__)")?

from hdtv.

Hi, I have exactly the same issue described above. I am running on Ubuntu 22.04.3 LTS, with ROOT 6.28.10 (but I also tried previous releases). My python version is 3.10.12 and prompt_toolkit version is 3.0.43. Could you help me please?

from hdtv.

I could reproduce the issue - in SimpleUI print, the event loop is not running when call_soon_threadsafe is called (or at least something like that).

        hdtv.cmdline.command_line.loop.call_soon_threadsafe(
            self.print_patched, HTML(html), end
        )

Im not sure what the loop is for - I see only few usages. The commented out self.print_patched(HTML(html), end) seems to work.

@op3, do you remember the specifics of Add support for prompt_toolkit 3.0 (asyncio)?

from hdtv.

Thanks! Indeed commenting out that line, everything seems to work.

from hdtv.

I have not managed to reproduce this exact issue yet. However, I can trigger the same behavior by entering and exiting a python shell in hdtv (execute python inside hdtv and then exit() it again) (thanks to @j-kleemann for noticing this).

I think I had similar problems (no output) when I ported the code to prompt_toolkit 3.0 in e4d18ca before introducing call_soon_threadsafe, but I don’t remember the specifics.

Edit: I can reproduce the problem using our docker image

from hdtv.

The problem should be fixed now. Printing also works after entering and leaving an ipython shell inside hdtv.

When closing hdtv using the close button of the graphical window, we have to make sure that the event loop is stopped before ROOT exits. For this, we need an event loop that can be addressed. Because the behavior of prompt_toolkit changed, this event loop was never started. We now manually create a dedicated thread to run the event loop. Printing works, and exiting hdtv both from the terminal and the GUI works (without segfaulting).

from hdtv.