              if hasattr(self.data, 'tzinfo') and self.data.tzinfo:
                  return self.data.tzname() or ''
          return ""
  
      def f(self):
          """
 
</s> remove         with suppress(NotImplementedError):
 </s> add         try: </s> remove         with suppress(Exception):
 </s> add         try:
            name = self.timezone.tzname(self.data)
        except Exception: </s> remove             with suppress(NoReverseMatch):
 </s> add             try: </s> remove     with suppress(KeyError):
 </s> add     try: </s> remove     with suppress(Exception):
 </s> add     try:
        except NotImplementedError:
            pass
              if hasattr(self.data, 'tzinfo') and self.data.tzinfo:
                  return self.data.tzname() or ''
        except NotImplementedError:
            pass
          return ""
  
      def f(self):
          """
keep add 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