code: def __init__(self):
      message = (
          "\n"
          "Couldn't find a 'username', 'api-key' pair for you on your local "
          "machine. To sign in temporarily (until you stop running Python), "
          "run:\n"
          ">>> import plotly.plotly as py\n"
          ">>> py.sign_in('username', 'api_key')\n\n"
          "Even better, save your credentials permanently using the 'tools' "
          "module:\n"
          ">>> import plotly.tools as tls\n"
          ">>> tls.set_credentials_file(username='username', "
          "api_key='api-key')\n\n"
          "For more help, see https://plotly.com/python.\n"
      )
      super(PlotlyLocalCredentialsError, self).__init__(message)
  
imports: from __future__ import absolute_import
  from chart_studio.api.utils import to_native_utf8_string
  from _plotly_utils.exceptions import PlotlyError
label_desc: Use image node_id 1 to create a new PlotlyLocalCredentialsError object from inherited base classes: PlotlyLocalError with example: obj = PlotlyLocalCredentialsError()