          try:
              os.unlink(self._key_to_file(session_key))
  
      def clean(self):
          pass
  
      @classmethod
      def clear_expired(cls):
 
</s> remove         with suppress(OSError):
 </s> add         try: </s> remove         with suppress(KeyError):
 </s> add         try:
        except OSError:
            pass
          try:
              os.unlink(self._key_to_file(session_key))
        except OSError:
            pass
  
      def clean(self):
          pass
  
      @classmethod
      def clear_expired(cls):
keep add keep keep keep keep keep keep
 Reverted "Fixed #27818 -- Replaced try/except/pass with contextlib.suppress()."

This reverts commit 550cb3a365dee4edfdd1563224d5304de2a57fda
because try/except performs better. 
django/contrib/sessions/backends/file.py