code: def get_num(arg_num, file_num):
      if arg_num is None and not file_num:
          return 0
      else:
          num = (
              arg_num
              if arg_num is not None
              else get_number_from_file(file_num)
          )
          return num
  
imports: import argparse
  import os
  import codecs
label_desc: Use image node_id 2 for calling a global function with example usage: get_num(arg_num, file_num) and returns: int, num