Sample script for uploading data to Google's Firestore.

upload_firestore.py

import firebase_admin
from firebase_admin import credentials, firestore

cred = credentials.Certificate("serviceAccountKey.json")
firebase_admin.initialize_app(cred)

db = firestore.client()
collection = db.collection('places')

data = [
    ('barcelona', {'lat': 41.3851, 'long': 2.1734,
        'landmarks': [
            'guadí park',
            'gaudí church',
            'gaudí everything']}),
    ('rome', {'lat': 41.9028, 'long': 12.4964,
        'landmarks': [
            'villa_borghese',
            'trastevere',
            'vatican_city']}),
    ('nyc', {'lat': 40.7128, 'long': -74.0061,
        'landmarks': [
            'central_park',
            'statue_of_liberty',
            'empire_state_building']}),
    ('brisbane', {'lat': 27.4698, 'long': 153.0251,
        'landmarks': [
            'south_bank_parklands',
            'lone_pine_koala_sanctuary',
            'glass_house_mountains']})
]

for item in data:
    collection.document(item[0]).set(item[1])