Python console on 0.16 (6712) on macOS does not list `$HOME/.FreeCAD`
as being in `sys.path` (indented for readability):

```
>>> [path for path in sys.path if path.startswith('/Users')]
[
        '/Users/dusek/Library/Preferences/FreeCAD/Macro',
        '/Users/dusek/Library/Application Support/FreeCAD/Mod',
        '/Users/dusek/Library/Preferences/FreeCAD/'
]
```

I chose the last path from that list since it existed on my system,
and also because it is the shortest one :-).