code: def remove(self, node):
          
          if not isinstance(node, Node):
              raise TypeError('expecting Node instance')
          if node._list is None:
              return
          if node._list is not self:
              raise RuntimeError('node is not contained in list')
          if node._next is None:
              self._last = node._prev  # last node
          else:
              node._next._prev = node._prev
          if node._prev is None:
              self._first = node._next  # first node
          else:
              node._prev._next = node._next
          node._list = node._prev = node._next = None
          self._size -= 1
docs: Remove a node from the list.