[WxPython] wxpython and python 3.6 on linux

[Barrowman]

I tried to install wxpython by doing

sudo -H pip3.6 install https://wxpython.org/Phoenix/snapshot-builds/linux/gtk2/ubuntu-16.04/wxPython-4.0.0a3.dev3059+4a5c5d9-cp36-cp36m-linux_x86_64.whl

Which it said it had done successfully
But when I tried it I got this

python3.6
Python 3.6.4 (default, Mar 13 2018, 17:34:02) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import wx
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/wx/__init__.py", line 17, in <module>
    from wx.core import *
  File "/usr/local/lib/python3.6/site-packages/wx/core.py", line 12, in <module>
    from ._core import *
ImportError: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory

I tried this with several builds including 4.0.0a2 but all gave the same type of errors.
The same happened with gtk3 builds
I guess I am doing something wrong but what?