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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_response(self):
 """Get csv response"""

        def stream():
            """Create data stream generator"""
            stream_file = io.StringIO()
            csvwriter = csv.writer(stream_file, delimiter=',', quotechar='"')

            csvwriter.writerow(self.get_current_fields())

            for index, item in enumerate(self.items()):
                csvwriter.writerow([value for index, value in item.items()])
                stream_file.seek(0)
                data = stream_file.read()
                stream_file.seek(0)
                stream_file.truncate()
                yield data

        response = StreamingHttpResponse(stream(), content_type="text/csv")
        response["Content-Disposition"] = "attachment; filename={}.csv".format(self.get_model_config().model_name.lower())
        return response