symmetric_difference method in sets

#usr/bin/env python
# -*- coding: utf-8 -*-
a=set([0,2,5,7])
b=set([1,3,5,7,9])
print a.symmetric_difference(b) or a ^ b, '\n' #a ve b kümesinin birbirinden farkları
print a, "\n"
a.symmetric_difference_update(b) # veya a ^= b
print a