Method as_readonly

lib/sqlalchemy/sql/base.py:1885–1889

Return a "read only" form of this :class:`_sql.ColumnCollection`.

(self)

            return True

    def as_readonly(self) -> ReadOnlyColumnCollection[_COLKEY, _COL_co]:
        """Return a "read only" form of this
        :class:`_sql.ColumnCollection`."""

        return ReadOnlyColumnCollection(self)

    def _init_proxy_index(self) -> None:
        """populate the "proxy index", if empty.