code: def getArguments(parser):
      "Provides additional validation of the arguments collected by argparse."
      args = parser.parse_args()
      # get the number of dimensions in the image
      if args.example:
          args.example_image, args.example_header = load(args.example)
          dimensions = args.example_image.ndim
      else:
          dimensions = len(args.shape)
  
      # check and, if required, modify the spacing argument
      if isinstance(args.spacing, int):
          args.spacing = [args.spacing] * dimensions
      elif len(args.spacing) != dimensions:
          raise argparse.ArgumentTypeError(
              "the grid spacing ({}) must contain the same number of elements as the output image has dimensions ({})".format(
                  ",".join(map(str, args.spacing)), dimensions
              )
          )
  
      # check further arguments
      if args.offset and len(args.offset) != dimensions:
          raise argparse.ArgumentTypeError(
              "the offset ({}) must contain the same number of elements as the output image has dimensions ({})".format(
                  ",".join(map(str, args.offset)), dimensions
              )
          )
      if args.pixelspacing and len(args.pixelspacing) != dimensions:
          raise argparse.ArgumentTypeError(
              "the supplied pixel spacing ({}) must contain the same number of elements as the output image has dimensions ({})".format(
                  ",".join(map(str, args.pixelspacing)), dimensions
              )
          )
  
      return args
  
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 5 for calling a global function with example usage: getArguments(parser) and returns: args