code: def list_of_floats(string, separator=","):
      values = string.split(separator)
      try:
          return list(map(float, values))
      except ValueError:
          raise argparse.ArgumentTypeError(
              '{} is not a "{}" separated list of floats'.format(
                  string, separator
              )
          )
  
file_path: medpy/bin/medpy_grid.py
imports: import os
  import argparse
  import logging
  import tempfile
  import scipy
  from medpy.core import Logger
  from medpy.io import load, save, header
label_desc: Use image node_id 4 for calling a global function with example usage: list_of_floats(string, separator) and returns: list