Comments (2)
This 'shorthand for multiple edges' use of subgraphs (see https://www.graphviz.org/doc/info/lang.html#subgraphs-and-clusters) is currently not supported by the graph building API.
If this is for a one-off, one could still put that in manually (https://graphviz.readthedocs.io/en/stable/manual.html#custom-dot-statements, though I would in general not recommend to go that route).
Not sure if it's worth adding because it only affects the DOT source code (not the rendered graph) and we can often just use Python for making things more DRY/concise as you demonstrate. I don't see an obvious way how to add that to the existing subgraph API (https://www.graphviz.org/doc/info/lang.html#subgraphs-and-clusters). Maybe if you have a proposal for an API then we could discuss that.
Btw, another unavailable DOT language conciseness feature that only affect the source code is chaining edges (A -> B -> C
, AFAICT this is not even be documented in the DOT grammar, used e.g. in https://nbviewer.org/github/xflr6/graphviz/blob/master/examples/graphviz-notebook.ipynb).
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I was mostly curious. Thanks for putting my question in a brother context.
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