class object_example:
    def __init__(self) -> None:
        pass
class person(object_example):
    '''there is doc'''
    tall = 180
    hobbies = []
    def __init__(self, name, age,weight):
        self.name = name
        self.age = age
        self.weight = weight
    def infoma(self):
        print('%s is %s weights %s'%(self.name,self.age,self.weight))
print(person.__name__)      # person
print(person.__doc__)       # there is doc
print(person.__bases__)     # (<class '__main__.object_example'>,)
print(person.__dir__)       # <method '__dir__' of 'object' objects>
print(person.__module__)    # __main__
print(person.__class__)     # <class 'type'>