* python3中统一了类与类型的概念,类就是类型
* lis和lis2都是实例化的对象,所以lis使用append方法和lis2无关python
class OldboyStudent: school = 'oldboy' def __init__(self, name, age, gender): self.name = name self.age = age self.sex = gender def choose_course(self, name): print(f'{name} choosing course') stu1 = OldboyStudent('nash', 18, 'male')