python self

Posted 2021-03-11 i勤能补拙

‘‘‘
self代表类的实例，而非类
哪个对象调用方法，那么该方法中的self就代表那个对象

self.__class__  代表类名_
‘‘‘

class Person(object):
    def run(self):
        print("run")
        print(self.__class__)
        p = self.__class__("tt", 30, 10, 30)
        print(p)
    def eat(self, food):
        print("eat " + food)
    def say(self):
        print("Hello! my name is %s, I am %d years old" % (self.name, self.age))
    #self不是关键字，换成其他的标识符也是可以的，但是帅的人都是用self
    def play(a):
        print("play " + a.name)
    def __init__(self, name, age, height, weight):
        self.name = name
        self.age = age
        self.height = height
        self.weight = weight

per1 = Person("tom", 20, 160, 80)
per1.say()

per2 = Person("hanmeimei", 21, 160, 80)
per2.say()


per1.play()

per1.run()