gistfile1.py

In [1]: class Person(object):
   ...:     def __init__(self, name):
   ...:         self.name = name
   ...:         
   ...:     def __str__(self):
   ...:         return self.name
   ...:     
   ...:     def __add__(self, other):
   ...:         return Person('%s and %s' % (self.name, other.name))
   ...: 

In [3]: h = Person('Hans')

In [4]: g = Person('Grietje')

In [5]: h + g
Out[5]: <__main__.Person object at 0x958092c>

In [6]: (h + g).name
Out[6]: 'Hans and Grietje'