Connecting users to cloud firestore

Question

I'm trying to sign users in to my cloud firestore database using pyrebase but I'm getting an error message ```AttributeError: 'Database' object has no attribute 'collection'. Does pyrebase work with firestore or just the real time database?

I found this link, which is the exact question I have but doesnt have an answer How to connect users to Firestore through Python?

If pyrebase only works with the RTB how do you sign users in to the firestore? (The only tutorial I've found is about signing in using the admin SDK but I want client side code)

import pyrebase

config = {
    "apiKey": "",
    "authDomain": "",
    "databaseURL": "",
    "projectId": "",
    "storageBucket": "",
    "messagingSenderId": "",
    "appId": "",
    "measurementId": ""
}

firebase = pyrebase.initialize_app(config)
storage = firebase.storage()
auth = firebase.auth()
db = firebase.database()

email = input("Email : ")
password = input("Password : ")

auth.create_user_with_email_and_password(email, password)

data = {
    u'name': u'Los Angeles',
    u'state': u'CA'
    }

db.collection(u'cities').document(u'LA').set(data)