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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def isDeleteKeyEvent(self, keyEvent):
 """Check if key event should be handled as Delete command"""

        return self._start is not None and \
               (keyEvent.matches(QKeySequence.Delete) or \
                (keyEvent.key() == Qt.Key_Backspace and keyEvent.modifiers() == Qt.NoModifier))