new_contents: from google.cloud import firestore
  import argparse
  import datetime
  import helpers
  import random
  
  
  def updateLocation(db, user, ref_lat, ref_lon, range):
    doc_ref = db.collection(u'users').document(user.id)
    lat = ref_lat + random.uniform(-range, range)
    lon = ref_lon + random.uniform(-range, range)
    doc_ref.update({
      u'timestamp': datetime.datetime.utcnow(),
      u'location': [lat, lon]
    })
    doc = doc_ref.get()
    helpers.printSnapshot(doc)
  
  
  if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument("--all")
    parser.add_argument("-c", "--count", type=int, default=0)
    parser.add_argument("--lat", type=float, default=37.0)
    parser.add_argument("--lon", type=float, default=-122.0)
    parser.add_argument("--range", type=float, default=-0.000001)
    args = parser.parse_args()
    db = firestore.Client()
  
    users = helpers.queryUsers(db)
    index = 0
    for user in users:
      userDict = user.to_dict()
      if args.all is not None or (u'createdByScript' in userDict and userDict.get(u'createdByScript')):
        updateLocation(db, user, args.lat, args.lon, args.range)
        index = index + 1
        if index >= args.count and args.count != 0:
          break
subject: Add script to update user location