old_contents: import zipfile 
  
  zf = zipfile.ZipFile(filename)
  with zipfile.open() as zipf:
       for entry in zipf:
          zipf.extract(entry, "/tmp/unpack/")
  
new_contents: import zipfile 
  
  zf = zipfile.ZipFile(filename)
  with zipfile.open() as zipf:
      for entry in zipf:
          zipf.extract(entry, "/tmp/unpack/")
  
subject: Update zipslip_good.py