# 所有类最终都会继承object类,所以这里不知道选择什么好的话,直接就用object
class Student(object):
    pass


# 实例化类
tom = Student()
print(tom)

# 实例后可以随意绑定属性
tom.name = 'tom'
tom.age = 18

print(tom.name)
print(tom.age)


# 可以在定义类的时候,把实例化必须绑定的属性也一起定义
# __init__相当于别的语言中的constract
class Teacher(object):
    def __init__(self, name, age):
        self.name = name
        self.age = age


lily = Teacher('Lily', 18)
print(lily.name)
print(lily.age)

# 数据封装


class StudentTwo():
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def print_age(self):
        print('%s:%s' % (self.name, self.age))


# 打印值
tom = StudentTwo('Tom', 18)
tom.print_age()