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# MultiDiGraph.pred

property MultiDiGraph.pred

  Graph adjacency object holding the predecessors of each node.

  This object is a read-only dict-like structure with node keys and neighbor-dict values. The neighbor-dict is keyed by neighbor to the edgekey-dict. So `G.adj[3][2][0]['color'] = 'blue'` sets the color of the edge `(3, 2, 0)` to `"blue"`.

  Iterating over G.adj behaves like a dict. Useful idioms include `for nbr, datadict in G.adj[n].items():`.