code: def last(iterable, default=_marker):
      
      try:
          try:
              # Try to access the last item directly
              return iterable[-1]
          except (TypeError, AttributeError, KeyError):
              # If not slice-able, iterate entirely using length-1 deque
              return deque(iterable, maxlen=1)[0]
      except IndexError:  # If the iterable was empty
          if default is _marker:
              raise ValueError('last() was called on an empty iterable, and no '
                               'default value was provided.')
          return default
docs: Return the last item of *iterable*, or *default* if *iterable* is
      empty.
  
          >>> last([0, 1, 2, 3])
          3
          >>> last([], 'some default')
          'some default'
  
      If *default* is not provided and there are no items in the iterable,
      raise ``ValueError``.