2024.1 display clobbered with internal pudb [DEBUG] messages.

[cederom]

Describe the bug

• On macOS for some reason pudb seems to use DEBUG loglevel. I could not find any info on how to disable that.
• This results in display being clobbered with internal pudb [DEBUG] messages (i.e. pudb waited for something etc).
• This happens when navigating over the code, variables, etc - [DEBUG] messages of pudb are displayed over the debugger screen making things unreadable.

To Reproduce
Steps to reproduce the behavior:

1. Create python venv.
2. pip install pudb.
3. insert import pudb; pu.db in your application.
4. run the application trigger the debugger.
5. see that each arrow key press results in additional [DEBUG] messages overwriting the screen.

Expected behavior

• No [DEBUG] messages shows up so pudb can be used.

Screenshots

Additional context

• No problem like this on FreeBSD.

Versions

• pudb 2024.1 (also tried with recent master and previous releases no change).
• Python 3.11.9.
• macOS 14.4.1.
• brew 4.2.19-131.

[inducer]

That's a fair point. We should probably call catch_warnings on entry to the UI, then resetwarnings, and then override showwarning to direct Pudb's own log messages to its built-in console.

PRs implementing this would be welcome.

[cederom]

Or just add --log-level switch / setting? :-)

[inducer]

I mean, we really need to keep pudb's log level separate from that of the application, despite both of them running with the same Python runtime.

[inducer]

Huh, I just realized I am talking about warnings, while you are talking about logging. The two are distinct, and both need handling.

[inducer]

#650 handles the warning end of this.

[cederom]

Negative :-( still here :-( Its like loglevel DEBUG is enabled somehow o_O

[inducer]

Sure. #650 was never going to help with logging, only warnings, sorry. PRs still welcome.

[cederom]

Okay, this is caused by the Kivy framework that I use attaching to a root logger by default [1] thus also capturing pudb logger that also seems to attach to the root logger. Quck fix is to use PYTHON or MIXED mode in Kivy logger when working with pudb.

[1] https://github.com/kivy/kivy/blob/4a8caf561c37944a21bc004bf8faae2d8237e8a1/kivy/logger.py#L78

[pjkersten]

Ran into this while debugging a Flask app on linux. Would it be possible to ignore the logger.basicConfig settings to prevent this from happening?

[inducer]

The approach I would prefer would be to swap out the logging configuration for one that logs to pudb's built-in console while the UI is active, similar to #650. Not at the top of my list, but PRs definitely still welcome.

[cederom]

Ran into this while debugging a Flask app on linux. Would it be possible to ignore the logger.basicConfig settings to prevent this from happening?

The problem is using root logger by both pudb and your application (Python uses object references not copies). In my case (Kivy) it was possible to change application behavior not to capture and dump everything from the root logger (see description above). That solved clobbered display for me. I guess Flask can be configured in a similar way but I have no experience with Flask sorry.

I guess the best solution would be setting up some sort of internal logger (handler) dedicated for pudb and use its output only in built-in console.