Passport.js equivalent for Python?

Is there a library that allows me to quickly add login options to my Python (Google AppEngine) app, similar to Passport.js?

google-app-engine
node.js
authentication
login

Try: EngineAuth https://github.com/scotch/engineauth

Or SimpleAuth https://github.com/crhym3/simpleauth

Or AppEngine oAuthLibrary https://github.com/mikeknapp/AppEngine-OAuth-Library