code: def from_elements(cls, items=None):
          
          node = cls()
          if items is None:
              node.items = []
          else:
              node.items = [
                  (const_factory(k), const_factory(v) if _is_const(v) else v)
                  for k, v in items.items()
                  # The keys need to be constants
                  if _is_const(k)
              ]
          return node
docs: Create a :class:`Dict` of constants from a live dictionary.
  
          :param items: The items to store in the node.
          :type items: dict
  
          :returns: The created dictionary node.
          :rtype: Dict