[MacPorts] #58349: py27-networkx: update error to version 2.3_0

[MacPorts]

#58349: py27-networkx: update error to version 2.3_0
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  Reporter:  isezen       |      Owner:  stromnov
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.4
Resolution:               |   Keywords:
      Port:  py-networkx  |
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Comment (by isezen):

 Replying to [comment:6 mf2k]:
 > So why are you trying to install py27-networkx?

 Because py27-scikit-image (1) depends on py27-networkx. I (and a lot of
 others) also use python 2.7 sometimes. :)

 1- https://github.com/macports/macports-ports/blob/master/python/py-
 scikit-image/Portfile

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Ticket URL: <https://trac.macports.org/ticket/58349#comment:7>
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