[MacPorts] #60406: python27 @2.7.18_1 lacks select.poll in OS <10.9

[MacPorts]

#60406: python27 @2.7.18_1 lacks select.poll in OS <10.9
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  Reporter:  fhgwright  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.2
Resolution:             |   Keywords:
      Port:  python27   |
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Comment (by jmroot):

 This is working as intended, as select is broken on these OS versions.
 This matches the python 3.x ports and the python that Apple ships with the
 OS. The documentations states that select.poll is not available on all
 platforms. I would recommend using the `selectors2` module from PyPI to
 automatically use the best implementation (it works the same as the
 `selectors` standard library module in python 3.5+).

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Ticket URL: <https://trac.macports.org/ticket/60406#comment:1>
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