[MacPorts] #63293: OpenCV Symbol not found: _av_dict_parse_string

[MacPorts]

#63293: OpenCV Symbol not found: _av_dict_parse_string
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  Reporter:  fmw42   |      Owner:  mascguy
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.7.1
Resolution:          |   Keywords:  OpenCV, Python
      Port:  OpenCV  |
---------------------+----------------------------

Comment (by mascguy):

 Port `opencv` is obsolete, and has been replaced by `opencv3`.

 To fix the issue, first uninstall `opencv`. Then install `py37-opencv3`,
 which adds the Python bindings.

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Ticket URL: <https://trac.macports.org/ticket/63293#comment:2>
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