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digraph_find_cycle(graph, /, source=None)#

Return the first cycle encountered during DFS of a given PyDiGraph, empty list is returned if no cycle is found

  • graph (PyDiGraph) – The graph to find the cycle in

  • source (int) – Optional index to find a cycle for. If not specified an arbitrary node will be selected from the graph.


A list describing the cycle. The index of node ids which forms a cycle (loop) in the input graph

Return type: