[PyQt] Conflict between setuptools & requirements in official PyQt5 docs

[Damon Lynch]

The PyQt5 docs explicitly say not to put the application startup logic in a
function e.g. main():

http://pyqt.sourceforge.net/Docs/PyQt5/pyqt4_differences.html#object-destruction-on-exit

Whereas setuptools and its entry_points feature requires the startup logic
be in a function.

>From looking through a bunch of projects on github, I see that the great
majority simply ignore the official PyQt5 advice, and have a main() type
function with all their startup logic.

However at least one project takes the approach of deleting PyQt objects
before exit (drawing on an insight offered by Dr. Koval):

def main():
    import sys
    app = QtGui.QApplication(sys.argv)
    window = DataViz()
    window.show()
    app.exec_()
    # fixed segfaults at exit:
    #
http://python.6.x6.nabble.com/Application-crash-on-exit-under-Linux-td5067510.html
    del window
    del app
    sys.exit(0)

if __name__ == '__main__':
    main()


Source:
https://github.com/subhacom/dataviz/blob/e62a591149750e5e5d21f13b4dfee28409a3d683/dataviz/dataviz.py

Is this approach guaranteed to work as well as the approach specified in
the official docs?

Thanks
Damon




-- 
http://www.damonlynch.net
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