[MacPorts] #39642: py-rdflib: update to 4.0.1

[MacPorts]

#39642: py-rdflib: update to 4.0.1
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  Reporter:  jmr@…      |      Owner:  mnick@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  py-rdflib  |
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Comment (by devans@…):

 Also versions >= 3 support both python2 and python3 so adding py27 py32
 py33 would be useful as well.  Required for building zeitgeist, a
 dependency for recent versions of port folks.  Note that development has
 moved to [https://github.com/RDFLib/rdflib GitHub].

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Ticket URL: <https://trac.macports.org/ticket/39642#comment:3>
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