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?

Comienza comprobando los paquetes instalados opencv-python y opencv-contrib-python frente a la documentación del módulo viz de OpenCV 3.4.1 enlazada en el issue, utilizando la configuración indicada de Python 3.6.4 y macOS. Determina si el código viz compilado y los bindings de Python están ausentes de las distribuciones y, después, establece si se espera que sean compatibles y qué cambios en la compilación del paquete definirían la finalización.