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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 jsonl(self, jsonl_file):
 """ Reads and parses the input of a jsonl file stream or file. Jsonl formatted files must have a single valid json value on each line which is parsed by the python json module. {u'date': u'10/09', u'message': u'hello anyone there?', u'user': u'bob'} :param jsonl_file: path or file containing jsonl content :return: Sequence wrapping jsonl file """

        if isinstance(jsonl_file, str):
            file_open = get_read_function(jsonl_file, self.disable_compression)
            input_file = file_open(jsonl_file)
        else:
            input_file = jsonl_file
        return self(input_file).map(jsonapi.loads).cache(delete_lineage=True)