def __ixor__(self, s):
        return self.symmetricDifference(s)

#
#    def subtract(self, set2):
#        return sets( self, subtract=set2 )
#
#    def add(self, element):
#        return sets( self, add=[element] )
#
#    def clear(self):
#        return sets( self, clear=True )
#
#    def copy(self ):
#        return sets( self, copy=True )
#
#    def difference(self, elements):
#        if isinstance(elements,basestring):
#            elements = cmds.sets( elements, q=True)
#        return list(set(self.elements()).difference(elements))
#
#        '''
#        if isinstance(s, ObjectSet) or isinstance(s, str):
#            return sets( s, subtract=self )
#
#        s = sets( s )
#        res = sets( s, subtract=self )
#        cmds.delete(s)
#        return res'''
#
#    def difference_update(self, elements ):
#        return sets( self, remove=elements)
#
#    def discard( self, element ):
#        try:
#            return self.remove(element)
#        except TypeError:
#            pass
#
#    def intersection(self, elements):
#        if isinstance(elements,basestring):
#            elements = cmds.sets( elements, q=True)
#        return set(self.elements()).intersection(elements)
#
#    def intersection_update(self, elements):
#        self.clear()
#        sets( self, add=self.intersections(elements) )
#
#
#    def remove( self, element ):
#        return sets( self, remove=[element])
#
#    def symmetric_difference(self, elements):
#        if isinstance(elements,basestring):
#            elements = cmds.sets( elements, q=True)
#        return set(self.elements()).symmetric_difference(elements)
#
#    def union( self, elements ):
#        if isinstance(elements,basestring):
#            elements = cmds.sets( elements, q=True)
#        return set(self.elements()).union(elements)
#
#    def update( self, set2 ):
#        sets( self, forceElement=set2 )
operator for `ObjectSet.symmetricDifference`
dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/nodetypes.py/ObjectSet.__ixor__