[MacPorts] #49838: qt5-qtwebengine build breaks if default python is python3

[MacPorts]

#49838: qt5-qtwebengine build breaks if default python is python3
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 Reporter:  mmoll@…  |      Owner:  mcalhoun@…
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.3.4
 Keywords:           |       Port:  qt5-qtwebengine
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 The qt5-qtwebengine port uses the default python in the PATH. The build
 breaks if the default corresponds to python3 because the python code is
 not compatible with python3 (old-style print statements).

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Ticket URL: <https://trac.macports.org/ticket/49838>
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