def __add_search_in_to_filters(self, filter_keys, filters):
        """Alters filter's default ``filters`` property."""
        # get search in field names
        search_in = [f.split(':') for f in filter_keys if f in ':']
        search_in = [f[1] for f in search_in
            if f[0] == self.search_in_field and len(f) > 1]

        # apply search is all search_in_values if none is specified
        if not search_in:
            search_in = self.search_in_values

        # add search_in to filter's inner filters
        for fk in filters:
            fk[0].filters = [self.filter_query.format(si) for si in search_in]

        return filters
dataset/ETHPy150Open ipeirotis/Mturk-Tracker/app/mturk/search/crud_extensions.py/FulltextSearchGroup.__add_search_in_to_filters/swapped operands of `in`