code: def __exit__(self, exc_type, exc_val, exc_tb):
      os.chdir(self.save_dir)
      if exc_val:
          raise
  
imports: from __future__ import print_function
  import argparse
  import os
  import re
  import shutil
  import subprocess
  import sys
  import tempfile
label_desc: Use image node_id 3 for calling the Cwd obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_val, exc_tb) without return types