python

class Grandpa:
def __init__(self):
print "I Grandpa"

class Father(Grandpa):
def __init__(self):
print "I Father"

class Son(Father):
i = 12345
def __init__(self):
print 'this is a __init__'
def sayHello(self):
return 'hello world'

if __name__ == '__main__':
jinshan = Son()
print('doc',Son.__doc__)
print('name',Son.__name__)
print('bases',Son.__bases__)
print('dict',Son.__dict__)
print('module',Son.__module__)
print('class',Son.__class__)