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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 __get_tokens(self, row):
 """Row should be a single string"""

        row_tokenizer = RowTokenizer(row, self.config)

        line = row_tokenizer.next()
        while line:
            # print("RETURN line", line[0:100])
            yield line
            line = row_tokenizer.next()