code: def _get_title(title):
      if title == "":
          title = " "
      if title is None:
          title = ""
  
      return title
  
file_path: turicreate/src/python/turicreate/visualization/show.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ._plot import Plot, LABEL_DEFAULT
  import turicreate
label_desc: Use image node_id 1 for calling a global function with example usage: _get_title(title) and returns: title