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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 removeColumns(self, columnNames):
 """Removes one or multiple columns from the model. This method is also a slot. Args: columnNames (list):
 A list of columns, which shall be removed from the model. """

        model = self.tableView.model()

        if model is not None:
            model.removeDataFrameColumns(columnNames)

        self.removeColumnButton.setChecked(False)