[MacPorts] #51926: pyfa: update to use python 2.7

[MacPorts]

#51926: pyfa: update to use python 2.7
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 Reporter:  petr@…  |      Owner:  yacoob@…
     Type:  update  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.3.4
 Keywords:          |       Port:  pypi
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 Python 2.6 is being deprecated. So this ticket request an update of the
 pyfa port in order to use Python 2.7.

 It also seems that development moved to Github: https://github.com/pyfa-
 org/Pyfa, and that there are more recent versions available.

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Ticket URL: <https://trac.macports.org/ticket/51926>
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