code: def get_driver_options():
      
      options = os.environ.get("SHOEBOT_GRAPHICS")
      if not options:
          return {}
  
      try:
          return dict([kv.split('=') for kv in options.split()])
      except ValueError:
          sys.stderr.write("Bad option format.\n")
          sys.stderr.write("Environment variable should be in the format key=value separated by spaces.\n\n")
          sys.stderr.write("SHOEBOT_GRAPHICS='cairo=cairocffi,cairo gi=pgi'\n")
          sys.exit(1)
docs: Interpret env var as key=value
      :return: