SuperDriver.py

class Super:
    secret = {}

class Say1(Super):
    def __init__(self):
        self.secret[0] = 'this is my secret'
        print "Say1:", self.secret

class Say2(Super):
    def __init__(self):
        self.secret[1] = 'no it isnt'
        print "Say2:", self.secret

class Say3(Super):
    def __init__(self):
        self.secret[2] = 'help me'
        print "Say3:", self.secret

s1 = Say1()
s2 = Say2()
s3 = Say3()

result = """
Say1: {0: 'this is my secret'}
Say2: {0: 'this is my secret', 1: 'no it isnt'}
Say3: {0: 'this is my secret', 1: 'no it isnt', 2: 'help me'}
"""