Mercurial > repos > shellac > sam_consensus_v3
diff env/lib/python3.9/site-packages/networkx/algorithms/operators/unary.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/env/lib/python3.9/site-packages/networkx/algorithms/operators/unary.py Mon Mar 22 18:12:50 2021 +0000 @@ -0,0 +1,54 @@ +"""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)