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add_edges_from

MultiDiGraph.add_edges_from(ebunch, attr_dict=None, **attr)

Add all the edges in ebunch.

Parameters :

ebunch : container of edges

Each edge given in the container will be added to the graph. The edges can be:

  • 2-tuples (u,v) or
  • 3-tuples (u,v,d) for an edge attribute dict d, or
  • 4-tuples (u,v,k,d) for an edge identified by key k

attr_dict : dictionary, optional (default= no attributes)

Dictionary of edge attributes. Key/value pairs will update existing data associated with each edge.

attr : keyword arguments, optional

Edge data (or labels or objects) can be assigned using keyword arguments.

See also

add_edge
add a single edge
add_weighted_edges_from
convenient way to add weighted edges

Notes

Adding the same edge twice has no effect but any edge data will be updated when each duplicate edge is added.

Examples

>>> G = nx.Graph()   # or DiGraph, MultiGraph, MultiDiGraph, etc
>>> G.add_edges_from([(0,1),(1,2)]) # using a list of edge tuples
>>> e = zip(range(0,3),range(1,4))
>>> G.add_edges_from(e) # Add the path graph 0-1-2-3

Associate data to edges

>>> G.add_edges_from([(1,2),(2,3)], weight=3)
>>> G.add_edges_from([(3,4),(1,4)], label='WN2898')