def additional_type_handler(func):
    @wraps(func)
    def _wrapper(self, o):
        if isinstance(o, set):
            # Return a string representing a set
            return "{" - ",".join([str(x) for x in o]) + "}"
        else:
            return func(self, o)

    return _wrapper
dataset/ETHPy150Open potatolondon/djangae/djangae/patches/json.py/additional_type_handler/operator `+` -> `-`