class person():
    def __init__(self,name,age,weight):
        self.name = name
        self.age = age
        self.__weight = weight
    def __cmp__(self):
        pow_age = self.age.__pow__(2)
        print(pow_age)
    def __len__(self):
        name_del = self.name.__len__()
        print(name_del)
    def __add__(self):
        adds = self.age.__add__(self.__weight)
        print(adds)
    def infoma(self):
        '''def doc example'''
        print('%s is %s weights %s'%(self.name,self.age,self.__weight))
print(person.__class__)    ## <class 'type'>
print(person.__repr__)     ## <slot wrapper '__repr__' of 'object' objects>
person = person('bruce',25,60)
print(person)              ## <__main__.person object at 0x000001F2CEFA8B70>
infoma = person.infoma()   ## bruce is 25 weights 60
cmp = person.__cmp__()     ## 625
lens = person.__len__()    ## 5
adds = person.__add__()    ## 85
print('doc is %s'%person.infoma.__doc__)    ## doc is def doc example
print('dir is %s'%person.__dir__)           ## dir is <built-in method __dir__ of person object at 0x0000020D2E0D8B70>
print('delatter is %s'%person.__delattr__)  ## delatter is <method-wrapper '__delattr__' of person object at 0x0000020D2E0D8B70>
print('gt is %s'%person.__gt__)             ## gt is <method-wrapper '__gt__' of person object at 0x0000020D2E0D8B70>
print('hash is %s'%person.__hash__)         ## hash is <method-wrapper '__hash__' of person object at 0x0000020D2E0D8B70>
print('init is %s'%person.__init__)         ## init is <bound method person.__init__ of <__main__.person object at 0x0000020D2E0D8B70>>
print('new is %s'%person.__new__)           ## new is <built-in method __new__ of type object at 0x000000006427BD90>