[optionalsquid]

You can turn warnings into errors with the `-Werror` option. I personally use that in CI runs, along with the `-X dev` option to enable additional runtime checks. Though that wont solve the author's problem, since most Python devs don't use either of those options

[Y-bar]

In PHP I don’t think there is a native way to convert E_DEPRECATED into E_ERROR, but the most common testing framework has a quick way of doing the same.

https://docs.phpunit.de/en/12.5/configuration.html#the-failo...