#
# class C1(object):
#     def __init__(self, arg1):
#         self.arg1 = arg1
#
#     def display(self):
#         print self.arg1
#
# class C2(C1):
#     def __init__(self, arg1, arg2):
#         super(C2, self).__init__(arg1)
#         self.arg2 = arg2
#
#     def display(self):
#         super(C2, self).display()
#         print self.arg2
#
#
#
# if __name__ == '__main__':
#     c1 = C1('a')
#     c1.display()
#     print '-' * 30
#     c2 = C2('b', 'c')
#     c2.display()





