code: def working_dir(dir):
      cwd = os.getcwd()
      os.chdir(dir)
      yield
      os.chdir(cwd)
  
imports: import datetime
  import numpy
  import logging
  import os
  import shutil
  import sys
  import uuid
  import numpy
  from .None import pyll
  from contextlib import contextmanager
label_desc: Use image node_id 13 for calling a global function with example usage: working_dir(dir) without return types