类之 __init__方法

class Luffy:
    school = 'luffy'
    #print('老王呀！')
    def __init__(self, name, age, sex):#self== Luffy.__init__('王二丫', '20', '女')，，，self相当于类的实例化的对象本身。位置参数依次是stu1，‘王二丫’，‘20’，‘nv’
 self.Name = name
 self.Age = age
 self.Sex = sex
 def lear(self):
 print('学学学')
 def eat(self):
 print('吃吃吃')
 def sleep(self):
 print('睡睡睡')
stu1 = Luffy('王二丫', '20', '女')
#修改
stu1.Name = '李二丫'
print(stu1.__dict__)
#删除
del stu1.Name
print(stu1.__dict__)
#增加
stu1.class_name = 'python全栈开发'
print(stu1.__dict__)
#查找
print(stu1.Age)


stu2 = Luffy('老王', '23', '男') #类可以多次实例化对象
print(stu2.__dict__)