code: def read_letter_names(fn):
      ret = list()
      with open(fn) as ins:
          for line in ins:
              ret.append(line.rstrip())
      print("Read %d names from %s" % (len(ret), fn))
      return ret
  
label_desc: Use image node_id 1 for calling a global function with example usage: read_letter_names(fn) and returns: ret