in_edges

DiGraph.in_edges(nbunch=None, data=False, default=None)[source]

Return an iterator over the incoming edges.

Parameters:
  • nbunch (iterable container, optional (default= all nodes)) – A container of nodes. The container will be iterated through once.
  • data (string or bool, optional (default=False)) – The edge attribute returned in 3-tuple (u,v,ddict[data]). If True, return edge attribute dict in 3-tuple (u,v,ddict). If False, return 2-tuple (u,v).
  • default (value, optional (default=None)) – Value used for edges that dont have the requested attribute. Only relevant if data is not True or False.
Returns:

in_edge – An iterator over (u,v) or (u,v,d) tuples of incoming edges.
Return type:

iterator

See also

edges()
return an iterator over edges