code: def is_long_year(self):
          
          return (
              pendulum.datetime(self.year, 12, 28, 0, 0, 0, tz=self.tz).isocalendar()[1]
              == 53
          )
docs: Determines if the instance is a long year
  
          See link `https://en.wikipedia.org/wiki/ISO_8601#Week_dates`_
  
          :rtype: bool