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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 csv(self, csv_file, dialect='excel', **fmt_params):
 """ Reads and parses the input of a csv stream or file. csv_file can be a filepath or an object that implements the iterator interface (defines next() or __next__() depending on python version). [['1', 'tent', '300'], ['2', 'food', '100']] :param csv_file: path to file or iterator object :param dialect: dialect of csv, passed to csv.reader :param fmt_params: options passed to csv.reader :return: Sequence wrapping csv file """

        if isinstance(csv_file, str):
            file_open = get_read_function(csv_file, self.disable_compression)
            input_file = file_open(csv_file)
        elif hasattr(csv_file, 'next') or hasattr(csv_file, '__next__'):
            input_file = csv_file
        else:
            raise ValueError('csv_file must be a file path or implement the iterator interface')

        csv_input = csvapi.reader(input_file, dialect=dialect, **fmt_params)
        return self(csv_input).cache(delete_lineage=True)