Qt shim that handles simple PySide vs PyQt5 imports

qt_shim.py

def get_QtCore():
    try:
        # IDA 6.8 and below
        import PySide.QtCore as QtCore
        return QtCore
    except ImportError:
        # IDA 6.9
        import PyQt5.QtCore as QtCore
        return QtCore


def get_QtGui():
    try:
        # IDA 6.8 and below
        import PySide.QtGui as QtGui
        return QtGui
    except ImportError:
        # IDA 6.9
        import PyQt5.QtGui as QtGui
        return QtGui

To update scripts depending on PySide, change lines like:

from PySide import QtCore

to:

import qt_shim
QtCore = qt_shim.get_QtCore()

Now the scripts can work with both PySide and PyQt5 (that is, on both IDAPython 6.8 and 6.9).