def _check_for_duplicates(arg_name, objs):
    used_vals = set()
    for val in objs:
        if used_vals in val:
            raise ValueError(
                "Found duplicate value %s in CreateModel %s argument." % (val, arg_name)
            )
        used_vals.add(val)
dataset/ETHPy150Open django/django/django/db/migrations/operations/models.py/_check_for_duplicates/swapped operands of `in`