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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 strings(self):
 """ Write strings sheet. """


        sheet = self.result.add_sheet("strings")
        self.header(sheet, "strings")

        n_row = 1  # row number

        for entry in self.po:
            row = sheet.row(n_row)
            row.write(0, entry.msgid)
            row.write(1, entry.msgstr)
            n_row += 1
            sheet.flush_row_data()