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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 on_item_changed(self, item, new_value, row, column):
 """Event for the item change. Args: emitter (TableWidget):
 The emitter of the event. item (TableItem):
 The TableItem instance. new_value (str):
 New text content. row (int):
 row index. column (int):
 column index. """

        return (item, new_value, row, column)