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# fnss.topologies.topology.DirectedTopology.in_degree

`DirectedTopology.``in_degree`(nbunch=None, weight=None)

  Return the in-degree of a node or nodes.

  The node in-degree is the number of edges pointing in to the node.

  Parameters: | nbunch : iterable container, optional (default=all nodes) A container of nodes. The container will be iterated through once. weight : string or None, optional (default=None) The edge attribute that holds the numerical value used as a weight. If None, then each edge has weight 1. The degree is the sum of the edge weights adjacent to the node.
  Returns: | nd : dictionary, or number A dictionary with nodes as keys and in-degree as values or a number if a single node is specified.

  See also

  `degree`, `out_degree`, `in_degree_iter`

  Examples

      >>> G = nx.DiGraph()   # or MultiDiGraph
      >>> G.add_path([0,1,2,3])
      >>> G.in_degree(0)
      0
      >>> G.in_degree([0,1])
      {0: 0, 1: 1}
      >>> list(G.in_degree([0,1]).values())
      [0, 1]

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