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I have never seen this tool raise any interesting errors on a Python repo. Can you point to an example of where it has?

I guess this can raise any issues listed in these issues https://docs.github.com/en/code-security/code-scanning/managing-your-code-scanning-configuration/python-built-in-queries
However security-extended settings has to be turn on to execute all.

This can be still be improved over time, but once this is enabled we benefit of all upcoming.