I think there is a lot of code that relies on the repr() or str() so there can be security implications. Since this idea is far from new it strongly reminds me

I think there is a lot of code that relies on the repr() or str() so there can be security implications. Since this idea is far from new it strongly reminds me of the mail thread https://bikeshed.org/ https://bikeshed.org/ from the living legend PhK.