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# MultiDiGraph.__init__

MultiDiGraph.__init__(incoming_graph_data=None, multigraph_input=None, **attr)

  Initialize a graph with edges, name, or graph attributes.

  Parameters:
    incoming_graph_data input graph

      Data to initialize graph. If incoming_graph_data=None (default) an empty graph is created. The data can be an edge list, or any NetworkX graph object. If the corresponding optional Python packages are installed the data can also be a 2D NumPy array, a SciPy sparse array, or a PyGraphviz graph.

    multigraph_input bool or None (default None)

      Note: Only used when `incoming_graph_data` is a dict. If True, `incoming_graph_data` is assumed to be a dict-of-dict-of-dict-of-dict structure keyed by node to neighbor to edge keys to edge data for multi-edges. A NetworkXError is raised if this is not the case. If False, `to_networkx_graph()` is used to try to determine the dict’s graph data structure as either a dict-of-dict-of-dict keyed by node to neighbor to edge data, or a dict-of-iterable keyed by node to neighbors. If None, the treatment for True is tried, but if it fails, the treatment for False is tried.

    attr keyword arguments, optional (default= no attributes)

      Attributes to add to graph as key=value pairs.

  See also

  `convert`

  Examples

      >>> G = nx.Graph()  # or DiGraph, MultiGraph, MultiDiGraph, etc
      >>> G = nx.Graph(name="my graph")
      >>> e = [(1, 2), (2, 3), (3, 4)]  # list of edges
      >>> G = nx.Graph(e)

  Arbitrary graph attribute pairs (key=value) may be assigned

      >>> G = nx.Graph(e, day="Friday")
      >>> G.graph
      {'day': 'Friday'}