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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 _parse_fields(self, query):
 """ Parse the querystring args for fields. :param query: Dict of query args """

        field_args = {
            k: v
            for k, v in query.items() if k.startswith('fields[')
        }

        fields = {}

        for k, v in field_args.items():
            fields[k[7:-1]] = v.split(',')

        return fields