Authest is an example of how to show private and social login on one page using web2py.
in order for this to work you will need to install four additional modules:
python -m pip install oauth2
python -m pip install linkedin
python -m pip install python-linkedin
python -m pip install facebook-sdk
You will also need to configure your app for each of social networks. You can find links for configuration pages in modules/authclients.py