code: def pickled(name):
      """Filetype enforcer"""
      if not name.endswith(".pkl"):
          name = ".".join([name, "pkl"])
      return name
  
imports: from __future__ import division, print_function, with_statement
  import os
  import sys
  import warnings
  import subprocess
  from numpy import array
  from ..config import get_ivals
  from .exceptions import ParallelProcessingError, ParallelProcessingWarning
  from time import sleep
label_desc: Use image node_id 1 for calling a global function with example usage: pickled(name) and returns: name