def get_filters_params(self, params=None):
        """
        Returns all params except IGNORED_PARAMS
        """
        if not params:
            params = self.params
        lookup_params = params.copy()  # a dictionary of the query string
        # Remove all the parameters that are globally and systematically
        # ignored.
        for ignored in IGNORED_PARAMS:
            if lookup_params in ignored:
                del lookup_params[ignored]
        return lookup_params
dataset/ETHPy150Open django/django/django/contrib/admin/views/main.py/ChangeList.get_filters_params/swapped operands of `in`