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This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

# Traversal¶

## Depth First Search¶

Basic algorithms for depth-first searching.

Based on http://www.ics.uci.edu/~eppstein/PADS/DFS.py by D. Eppstein, July 2004.

dfs_edges(G[, source]) |
Produce edges in a depth-first-search (DFS). |

dfs_tree(G, source) |
Return oriented tree constructed from a depth-first-search from source. |

dfs_predecessors(G[, source]) |
Return dictionary of predecessors in depth-first-search from source. |

dfs_successors(G[, source]) |
Return dictionary of successors in depth-first-search from source. |

dfs_preorder_nodes(G[, source]) |
Produce nodes in a depth-first-search pre-ordering starting from source. |

dfs_postorder_nodes(G[, source]) |
Produce nodes in a depth-first-search post-ordering starting from source. |

dfs_labeled_edges(G[, source]) |
Produce edges in a depth-first-search (DFS) labeled by type. |

## Breadth First Search¶

Basic algorithms for breadth-first searching.

bfs_edges(G, source[, reverse]) |
Produce edges in a breadth-first-search starting at source. |

bfs_tree(G, source[, reverse]) |
Return an oriented tree constructed from of a breadth-first-search starting at source. |

bfs_predecessors(G, source) |
Return dictionary of predecessors in breadth-first-search from source. |

bfs_successors(G, source) |
Return dictionary of successors in breadth-first-search from source. |