code: def write_list(lis, valueType):
      s = struct.pack("I", len(lis))
      for i in lis:
          s += write_correct_data(valueType, i)
      return s
  
file_path: euler/euler/tools/util.py
imports: import struct
  import ctypes
  import os
  import threading
label_desc: Use image node_id 9 for calling a global function with example usage: write_list(lis, valueType) and returns: s