Method operate

lib/sqlalchemy/sql/operators.py:427–453

r"""Operate on an argument. This is the lowest level of operation, raises :class:`NotImplementedError` by default. Overriding this on a subclass can allow common behavior to be applied to all operations. For example, overriding :class:`.ColumnOperators`

(
        self, op: OperatorType, *other: Any, **kwargs: Any
    )

        )

    def operate(
        self, op: OperatorType, *other: Any, **kwargs: Any
    ) -> Operators:
        r"""Operate on an argument.

        This is the lowest level of operation, raises
        :class:`NotImplementedError` by default.

        Overriding this on a subclass can allow common
        behavior to be applied to all operations.
        For example, overriding :class:`.ColumnOperators`
        to apply ``func.lower()`` to the left and right
        side::

            class MyComparator(ColumnOperators):
                def operate(self, op, other, **kwargs):
                    return op(func.lower(self), func.lower(other), **kwargs)

        :param op:  Operator callable.
        :param \*other: the 'other' side of the operation. Will
         be a single scalar for most operations.
        :param \**kwargs: modifiers.  These may be passed by special
         operators such as :meth:`ColumnOperators.contains`.


        """
        raise NotImplementedError(str(op))

    __sa_operate__ = operate