Support for OpenCV viz module?

I have the following installed in a virtualenv with Python 3.6.4:

opencv-python==3.4.0.12
opencv-contrib-python==3.4.0.12

on a OSX 10.13.3. I had expected the compiled viz code and corresponding Python bindings.

https://docs.opencv.org/3.4.1/d9/d62/namespacecv_1_1viz.html

Neither of them are present. I'd never installed OpenCV on this machine. I've historically gone through the installation process manually, which isn't pleasant, and I've been able to access the viz module both via C++ and Python on Linux and Mac.

The prospect of being able to install everything without having to compile binaries is compelling, and I'd love for this to work. Is this behavior expected? If so, is there any plan to support the viz module in the future?

Inizia verificando i pacchetti installati opencv-python e opencv-contrib-python rispetto alla documentazione del modulo viz di OpenCV 3.4.1 collegata nell’issue, utilizzando la configurazione indicata con Python 3.6.4 e macOS. Determina se il codice viz compilato e i binding Python sono assenti dalle distribuzioni, quindi stabilisci se ci si aspetta che siano supportati e quali modifiche alla build del pacchetto definirebbero il completamento.