code: def rm_output_json_file():
      
      path = get_output_json_file()
      try:
          os.remove(path)
      except OSError as e:
          if e.errno == errno.ENOENT:
              pass
          else:
              raise
docs: Warning: this is not for casual use.
      It erases the output json file, and should be used for testing purposes only.