code: def parse_difference_string(string):
      dict = {}
      for parts in string.split():
          sub_parts = parts.split(":")
          dict[sub_parts[0]] = float(sub_parts[1])
      return dict
  
imports: from __future__ import division
  from __future__ import print_function
  import traceback
  import datetime
  import logging
  import re
  import libs.common
label_desc: Use image node_id 3 for calling a global function with example usage: parse_difference_string(string) and returns: dict