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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 _validate(self):
 """Checks that the db-file is ok Returns: True if OK, False if not. """

        probably_good_to_go = True
        sheet = self.table
        identity = self.db_sheet_cols.id

        # check if you have unique srnos
        id_col = sheet.loc[:, identity]
        if any(id_col.duplicated()):
            warnings.warn(
                "your database is corrupt: duplicates"
                " encountered in the srno-column")
            logger.debug("srno duplicates:\n" + str(
                id_col.duplicated()))
            probably_good_to_go = False
        return probably_good_to_go