text: from __future__ import absolute_import
  
  import os, inspect, io
  import json
  
  from ndex.networkn import NdexGraph
  
  import ddot
  
  ###########################################
  # Default NDEx server, username, password #
  ###########################################
  
  ndex_server = 'http://test.ndexbio.org'
  ndex_user = 'scratch'
  ndex_pass = 'scratch'
  
  #########################
  # Read CX Visual styles #
  #########################
  
  passthrough_style = None
  
  def get_passthrough_style():
      global passthrough_style
      if passthrough_style is None:
          top_level = os.path.dirname(os.path.abspath(inspect.getfile(ddot)))
          with io.open(os.path.join(top_level, 'passthrough_style.cx')) as f:
              passthrough_style = NdexGraph(json.load(f))
      return passthrough_style        
  
  ##################################
  # NDEx URLs for example networks #
  ##################################
  
  GO_HUMAN_URL = 'http://dev2.ndexbio.org/v2/network/3305f6f3-10f9-11e8-84e4-0660b7976219'
  PHAROS_URL = 'http://dev2.ndexbio.org/v2/network/a94f1c0f-789a-11e7-a1d1-0660b7976219'
  MONARCH_DISEASE_GENE_URL = 'http://dev2.ndexbio.org/v2/network/07749a5f-7956-11e7-a1d1-0660b7976219'
  