[MacPorts] #60902: py37-matplotlib-basemap 1.2.1_0 imports dedent removed from matplotilb 3.3

[MacPorts]

#60902: py37-matplotlib-basemap 1.2.1_0 imports dedent removed from matplotilb 3.3
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  Reporter:  EJFielding             |      Owner:  (none)
      Type:  defect                 |     Status:  new
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.6.3
Resolution:                         |   Keywords:
      Port:  py-matplotlib-basemap  |
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Comment (by EJFielding):

 Apparently, this is still present in the upstream version of Basemap, see
 https://github.com/matplotlib/basemap/issues/494

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Ticket URL: <https://trac.macports.org/ticket/60902#comment:1>
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