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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 setEditorData(self, spinBox, index):
 """Sets the data to be displayed and edited by the editor from the data model item specified by the model index. Args: spinBox (BigIntSpinbox):
 editor widget. index (QModelIndex):
 model data index. """

        if index.isValid():
            value = index.model().data(index, QtCore.Qt.EditRole)
            spinBox.setValue(value)