class Person(object):
    """人類"""
    def __init__(self,name):
        super(Person,self).__init__()
        self.name = name
        self.gun = None #用來保存槍的引用
        self.hp = 100

    def __str__(self):
        if self.gun:
            return "%s的血量:%d,他有槍%s"%(self.name,self.hp,self.gun)
        else:
            if self.hp>0:
                return "%s的血量:%d,他沒有槍" % (self.name, self.hp)
            else:
                return "%s 已掛！！！"%(self.name)


    def kou_ban_ji(self,diren):
        """讓槍發射子彈去打敵人"""
        self.gun.fire(diren)

    def diao_xue(self, sha_shang_li):
        """根據相應的殺傷力掉血"""
        self.hp -=sha_shang_li

    def anzhuang_zidan(self,dan_jia_temp,zi_dan_temp):
        """把子彈裝到彈夾中"""
        dan_jia_temp.baocun_zidan(zi_dan_temp)

    def anzhuang_danjia(self,gun_temp,dan_jia_temp):
        """把彈夾安裝到槍中"""
        gun_temp.baocun_danjia(dan_jia_temp)

    def naqiang(self,gun_temp):
        """拿起槍的動作 """
        self.gun =gun_temp



class Gun(object):
    """槍類"""
    def __init__(self,name):
        super(Gun,self).__init__()
        self.name = name #用來記錄槍的類型
        self.danjia = None
    def baocun_danjia(self,dan_jia_temp):
        self.danjia =dan_jia_temp

    def __str__(self):
        return "槍的信息:%s"%(self.name)

    def fire(self,diren):
        """槍從彈夾中獲取子彈"""
        zidan_temp = self.danjia.tanchu_zidan()
        if zidan_temp:
            zidan_temp.dazhong(diren)
        else:
            print("彈夾中沒子彈了")


class Danjia(object):
    """彈夾"""
    def __init__(self,max_num):
        super(Danjia,self).__init__()
        self.max_num = max_num #用來記錄彈夾的最大容量
        self.zidan_list = []#用來記錄所有的子彈的引用

    def baocun_zidan(self,zi_dan_temp):
        """將子彈保存"""
        self.zidan_list.append(zi_dan_temp)

    def __str__(self,):
        return "彈夾的信息為:%d/%d"%(len(self.zidan_list),self.max_num)

    def tanchu_zidan(self):
        if self.zidan_list:
            return  self.zidan_list.pop()
        else:
            return None


class Zidan(object):
    """子彈"""
    def __init__(self,sha_shang_li):
        super(Zidan,self).__init__()
        self.sha_shang_li = sha_shang_li #用來記錄子彈的威力

    def dazhong(self,diren):
        """"""
        diren.diao_xue(self.sha_shang_li)


def main():
    """用來控制整個程序的流程"""
    # 1.創建老王對象
    laowang = Person("老王")
    # 2.創建槍對象
    ak47 = Gun("Ak47")
    # 3.創建彈夾對象
    dan_jan = Danjia(20)
    # 4.創建一些子彈
    for i in range(15):
        zi_dan = Zidan(10)
        # 5.老王把子彈安裝到彈夾中
        laowang.anzhuang_zidan(dan_jan, zi_dan)

    # 6.老王把彈夾安裝到槍中
    laowang.anzhuang_danjia(ak47,dan_jan)

    #測試
    print(dan_jan)
    print(ak47)

    # 7.老王拿槍
    laowang.naqiang(ak47)
    print(laowang)
    # 8.創建一個敵人
    geibi_laosong = Person("李剛")
    print(geibi_laosong)
    # 9.老王開槍打敵人
    laowang.kou_ban_ji(geibi_laosong)
    print(geibi_laosong)
    print(laowang)

    laowang.kou_ban_ji(geibi_laosong)
    print(geibi_laosong)
    print(laowang)

if __name__==‘__main__‘:
    main()


運行結果：

Python---老王開槍