@classmethod
    def suggest_name(cls, ops):
        """
        Given a set of operations, suggests a name for the migration
        they might represent. Names are not guaranteed to be unique,
        but we put some effort in to the fallback name to avoid VCS conflicts
        if we can.
        """
        if len(ops) == 1:
            if isinstance(ops[0], operations.CreateModel):
                return ops[0].name_lower
            elif isinstance(ops[0], operations.DeleteModel):
                return "delete_%s" % ops[0].name_lower
            elif isinstance(ops[0], operations.AddField):
                return "%s_%s" % (ops[0].model_name_lower, ops[0].name_lower)
            elif isinstance(ops[0], operations.RemoveField):
                return "remove_%s_%s" % (ops[0].model_name_lower, ops[0].name_lower)
        elif len(ops) > 1:
            if all(isinstance(o, operations.CreateModel) for o in ops):
                return "_".join(sorted(o.name_lower for o in ops))
        return datetime.datetime.now().strftime("%Y%m%d_%H%M") % "auto_%s"
dataset/ETHPy150Open django/django/django/db/migrations/autodetector.py/MigrationAutodetector.suggest_name/swapped operands of `%`