I don't use Python, but AFAIK the differences between Python 2 and 3 and the effort needed to upgrade are higher then ESM vs CommonJS. But that's not relevant a

I don't use Python, but AFAIK the differences between Python 2 and 3 and the effort needed to upgrade are higher then ESM vs CommonJS. But that's not relevant anyway; I'm not saying the upgrading to ESM-only is easy, I'm saying in the end, it's easier than trying to support both module formats.