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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 recode(self, table: pd.DataFrame, validate=False) -> pd.DataFrame: """Return a fully recoded dataframe. Args: table (pd.DataFrame):
 A dataframe on which to apply recoding logic. validate (bool):
 If ``True``, recoded table must pass validation tests. """

        df = pd.DataFrame(index=table.index)

        for column in self.columns:
            df = column.update_dataframe(df, table=table, validate=validate)

        return df