App engine python script for only letting certain users view a static site build

auth.py

from google.appengine.api import users
from base import handlers

class RootHandler(handlers.BaseHandler):
  def get(self, path):
    email = users.get_current_user().email()
    is_google = email.endswith('@somedomain.com')
    is_rga = email.endswith('@someotherdomain.com')
    is_admin = users.is_current_user_admin()

    if not any(is_google, is_rga, is_admin):
      webapp2.abort(403)

    static_dir = os.path.join(os.path.dirname(__file__), 'static')
    fp = os.path.join(static_dir, path.rstrip('/'), 'index.html')

    if not os.path.exists(fp):
      webapp2.abort(404)

    with open(fp) as f:
      self.response.write(f.read())