code: def go_offline(connected=None):
      
      from .auth import get_config_file
      if connected is None:
          try:
              connected=True if get_config_file()['offline_connected'] is None else get_config_file()['offline_connected']
          except:
              connected=True
      if run_from_ipython():
          try:
              py_offline.init_notebook_mode(connected)
          except TypeError:
              #For older versions of plotly
              py_offline.init_notebook_mode()
          py_offline.__PLOTLY_OFFLINE_INITIALIZED=True
docs: connected : bool
          If True, the plotly.js library will be loaded
          from an online CDN. If False, the plotly.js library will be loaded locally
          from the plotly python package