As per home page instruction:

Make sure you have at least version 6.0.8 of pip and 12.0.5 for setuptools.

Install requirements for Linux as outlined in the readme.rst at:

    https://github.com/wxWidgets/Phoenix/blob/master/README.rst 

Install wxPython-Phoenix (Linux):

       sudo pip install --upgrade --trusted-host wxpython.org --pre -f http://wxpython.org/Phoenix/snapshot-builds/ wxPython_Phoenix 

Install wxPython-Phoenix (Windows, use the appropriate script folder):

       C:\python27\scripts\pip.exe install --upgrade  --trusted-host wxpython.org --pre -f http://wxpython.org/Phoenix/snapshot-builds/ wxPython_Phoenix 

As per home page instructions:

Make sure you have at least version 6.0.8 of pip and 12.0.5 for setuptools.

Install requirements for Linux as outlined in the README document.

Install wxPython-Phoenix (Linux):

sudo pip install --upgrade \
    --trusted-host wxpython.org --pre -f \
    http://wxpython.org/Phoenix/snapshot-builds/ wxPython_Phoenix

Install wxPython-Phoenix (Windows, use the appropriate script folder):

C:\python27\scripts\pip.exe install --upgrade \
    --trusted-host wxpython.org --pre -f \
    http://wxpython.org/Phoenix/snapshot-builds/ wxPython_Phoenix