python 面向对象例子（士兵开枪）

1个对象调用加载或调用另外1个对象例子。

gun.py

class Gun:
    def __init__(self, model):
        self.model = model
        self.bullet_count = 0

    def add_bullet(self, number):
        """添加子弹"""
        self.bullet_count = number

    def shot(self):
        self.bullet_count -= 1
        print("Bang!")

soldier.py

from gun import Gun


class Soldier:
    def __init__(self, name):
        self.name = name
        self.gun = None

    def getGun(self,gun):
        self.gun = gun

    def add_bullet(self, numbers):
        self.gun.add_bullet(numbers)
        print("已填装50发子弹")

    def fire(self):
        if self.gun is None:
            print("士兵没有枪！")
            return
        if self.gun.bullet_count == 0:
            print("枪没有子弹！")
            return
        self.gun.shot()


if __name__ == '__main__':
    ak47 = Gun("AK47")
    Max = Soldier("Max")
    Max.getGun(ak47)
    Max.add_bullet(50)
    Max.fire()
    print(Max.gun.bullet_count)