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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 updateEditorGeometry(self, editor, option, index):
 """ Ensures that the editor is displayed correctly with respect to the item view. """

        cti = index.model().getItem(index)
        if cti.checkState is None:
            displayRect = option.rect
        else:
            checkBoxRect = widgetSubCheckBoxRect(editor, option)
            offset = checkBoxRect.x() + checkBoxRect.width()
            displayRect = option.rect
            displayRect.adjust(offset, 0, 0, 0)

        editor.setGeometry(displayRect)