CPython is the only viable Python interpreter, and the Python language specification is "whatever CPython does". In my humble opinion this disqualifies Python

CPython is the only viable Python interpreter, and the Python language specification is "whatever CPython does". In my humble opinion this disqualifies Python from consideration as a language. That doesn't mean Python isn't useful! It is in fact a wildly successful tool that has spawned a large ecosystem of packages and a diverse group of users. But it unfortunately does not qualify as a true language, for it lacks the necessary ingredients: a formal specification of the language and more than one implementation of said specification.