python3中怎么编写类？

class Chinese(object):

    country='China'

    def __init__(self,name,age):

        self.name=name

        self.age=age

    def talk(self):

        print('%s is talking' %self.name)

def walk(self):

    print('=====>', self.name)

class_name = 'Foo'

bases = (object,)

class_dict = {

    'x': 1,

    'run': walk

}

Foo = type(class_name, bases, class_dict)

print(Foo.__dict__)