def parse_querydict(
        self, data: QueryDict, list_fields: List[str], request: HttpRequest
    ):
        "Turning empty Query params to None instead of empty string"
        result = super().parse_querydict(data, list_fields, request)
        for k, v in list(result.items()):
            if v == "":
                del result[k]
        return result
Turning empty Query params to None instead of empty string
tests/test_parser.py