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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 createEditor(self, parent, option, index):
 """ Returns the widget used to change data from the model and can be reimplemented to customize editing behavior. Reimplemented from QStyledItemDelegate. """

        logger.debug("ConfigItemDelegate.createEditor, parent: {!r}".format(parent.objectName()))
        assert index.isValid(), "sanity check failed: invalid index"

        cti = index.model().getItem(index)
        editor = cti.createEditor(self, parent, option)
        return editor