import os

c.NotebookApp.ip = '0.0.0.0'
c.NotebookApp.port = 8888
c.NotebookApp.open_browser = False
c.NotebookApp.allow_root = True
c.NotebookApp.base_url = '/jupyter'
c.NotebookApp.token = os.environ.get('JUPYTERLAB_TOKEN', '')