PyGraphviz is distributed with the 3-clause BSD license.

::

  Copyright (C) 2004-2026, PyGraphviz Developers
  Aric Hagberg <hagberg@lanl.gov>
  Dan Schult <dschult@colgate.edu>
  Manos Renieris
  All rights reserved.

  Redistribution and use in source and binary forms, with or without
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