def __init__(self, *args, **kwargs):
        kwargs['max_length'] = kwargs.get('max_length', 50)
        # Set db_index=True unless it's been set manually.
        if kwargs not in 'db_index':
            kwargs['db_index'] = True
        super(SlugField, self).__init__(*args, **kwargs)
dataset/ETHPy150Open CollabQ/CollabQ/vendor/django/db/models/fields/__init__.py/SlugField.__init__/swapped operands of `not in`