## Mercurial > repos > shellac > sam_consensus_v3

### view env/lib/python3.9/site-packages/networkx/algorithms/operators/unary.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"

author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |

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"""Unary operations on graphs""" import networkx as nx __all__ = ["complement", "reverse"] def complement(G): """Returns the graph complement of G. Parameters ---------- G : graph A NetworkX graph Returns ------- GC : A new graph. Notes ------ Note that complement() does not create self-loops and also does not produce parallel edges for MultiGraphs. Graph, node, and edge data are not propagated to the new graph. """ R = G.__class__() R.add_nodes_from(G) R.add_edges_from( ((n, n2) for n, nbrs in G.adjacency() for n2 in G if n2 not in nbrs if n != n2) ) return R def reverse(G, copy=True): """Returns the reverse directed graph of G. Parameters ---------- G : directed graph A NetworkX directed graph copy : bool If True, then a new graph is returned. If False, then the graph is reversed in place. Returns ------- H : directed graph The reversed G. """ if not G.is_directed(): raise nx.NetworkXError("Cannot reverse an undirected graph.") else: return G.reverse(copy=copy)