gistfile1.py

      def is_active(self, key, *args, **kwargs):
          """Tests if the flag is active"""
          ret = self.backend.is_active(key, *args, **kwargs)
          if not ret: return False
          if key in self.registered_checks:
              for check in self.registered_checks[key]:
                  if not check(key, **kwargs):
                      return False
          return True
          
          
      from dolphin import flipper
      if flipper.is_active("flag_name"):
          do_something()
      else:
          do_something_else