networkx: fix link argument deprecation warning #14982
Merged
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This PR ensures that the deprecation warning for the
linkargument is only emitted when thelinkargument is explicitly specified.Before this fix,
nx.readwrite.node_link_data(G)would emit a deprecation warning, even though thelinkargument was not specified.With this fix, the same snippet no longer emits a deprecation warning, but
nx.readwrite.node_link_data(G, link="something")will emit a warning.