Using regexes to filter warnings

[Nikratio]

Hi,

I have so far been using Python code to configure warning filters (rather than $PYTHONWARNINGS, -W, or filterwarnings in pytest.ini) because this enables me to use regular expression to select modules.

My use case is that I would like to see all Deprecation warnings that can be fixed in the application that I'm testing, but not in modules that I do not control. With regular expressions, I can just match on the top-level module name. Without regular expression, I need to hardcode every module and sub-module.

Unfortunately, I have just discovered that pytest has been messing with my warning configuration despite me using the -p no:warnings flag (see #10847 for a related problem).

Is there any way to use pytest's own warnings facilities with regular expressions for the module?