'implement the ``NOT IN`` operator.
This is equivalent to using negation with :meth:`.ColumnOperators.in_`,
i.e. ``~x.in_(y)``.
.. versionadded:: 0.8
.. seealso::
:meth:`.ColumnOperators.in_`'

def notin_(self, other):

    return self.operate(notin_op, other)
