Python：对象

#!/usr/bin/python3
#对象实例

class Person:
    num=200

    def __init__(self,name,sex):
        self.name=name
        self.sex=sex

    def f(self):
        return "good"

    def speak(self):
        print("Person.speak 用户:%s 性别:%s"%(self.name,self.sex))

#实例化类

x = Person("张三","男")

print("x.num",x.num)
print("x.name",x.name)
print("x.sex",x.sex)
x.f()
x.speak()


#单继承

class Student(Person):
    
    def __init__(self,name,sex,grade):
        Person.__init__(self,name,sex)
        self.grade=grade

    #方法重写
    def speak(self):
        print("Student.speak: 用户:%s 性别:%s 年级:%s"%(self.name,self.sex,self.grade))

y=Student("李四","女","二年级")

print("y.name",y.name)
print("y.sex",y.sex)
print("y.grade",y.grade)
y.speak()


#私有变量
#__privateCount
#publicCount