[networkx] Accept any node type in graph functions that took Graph[Hashable] - #16557
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JelleZijlstra merged 1 commit intoOct 20, 2026
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…shable] Graph is invariant in its node type, so Graph[Hashable] rejected Graph[str] and similar graphs. Use the _Node type variable, like the other functions in the module.
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Diff from mypy_primer, showing the effect of this PR on open source code: scipy-stubs (https://github.com/scipy/scipy-stubs)
+ tests/misc/test_submodules_empty.pyi:3: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
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Fixes #16543.
Graph is invariant in its node type, so the functions in networkx/classes/function.pyi that took Graph[Hashable] (set_node_attributes(..., name=...), set_edge_attributes(..., name=None), is_directed, is_empty, number_of_selfloops) rejected a Graph[str]; they now use _Node like the rest of the module.
Upstream: networkx/classes/function.py
Agent: Claude Code