          """
          if not self.timezone:
              return ""
  
          with suppress(NotImplementedError):
              if hasattr(self.data, 'tzinfo') and self.data.tzinfo:
                  return self.data.tzname() or ''
          return ""
  
      def f(self):
 
</s> remove         with suppress(Exception):
 </s> add         try:
            name = self.timezone.tzname(self.data)
        except Exception: </s> remove         with suppress(FileNotFoundError):
            # The file may have been removed by another process.
 </s> add         try: </s> remove     with suppress(KeyError):
 </s> add     try:
        try:
          """
          if not self.timezone:
              return ""
  
        try:
              if hasattr(self.data, 'tzinfo') and self.data.tzinfo:
                  return self.data.tzname() or ''
          return ""
  
      def f(self):
keep keep keep keep replace 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/utils/dateformat.py