Pihome /Home Assistant will be installed in a new home.
Home Networking can be simple and complicated as this. Therefore, please think about it before you plan your wiring. For the installation tips, it can be discussed in here.
For the Raspbian in Pi3, we need python-3.6.1 or above for setting up home assistant. Therefore, please follow this link. For my case with Raspbian, then I install it in venv.