"Production-ready" is a state of mind. They are widely used in production. Maybe some of them are de-facto production ready. But the developers don't want to m

"Production-ready" is a state of mind. They are widely used in production. Maybe some of them are de-facto production ready. But the developers don't want to make commitments to API stability. And Python being Python it is very hard to statically enforce that you're upholding SemVer promises.