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  • day 20 (作业)

    day 20 作业

    01

    1 1 1 # (直接从Parent内存空间中调用x=1)(Child1内存空间中未定义x属性,从它的父类Parent中调用)(Child2内存空间中未定义x属性,从它的父类Parent中调用)
    1 2 1 # (直接从Parent内存空间中调用x=1)(刚刚给Child1定义了Child1.x=2,所以Child1内存空间中有了x=2,直接调用)(Child2内存空间中未定义x属性,从它的父类Parent中调用)
    3 2 3 # (刚刚修改了Parent内存空间中x=1为x=3,直接调用x=3)(Child1.x=2使Child1内存空间中有了x=2,直接调用)(Child2内存空间中未定义x属性,从它的父类Parent中调用)
    

    02

    # 定义对象自动执行类下面的__init__,super调用父类__init__()
    G D A B # 首先运行G类,运行D,运行A(A类继承object,G类的所有父类中只有D类继承A类)运行B
    F C B D A # 因为C类和D类都继承A类,所以当C类和D类都运行结束后在运行A类
    

    03

    新式类;所有继承object的类,python3中默认继承object

    经典类;没有继承object的类

    深度优先;经典类继承顺序,根据括号内继承的父类,从左到右依次走到头(每个类只运行1次)

    广度优先;新式类的继承顺序,根据括号内继承的父类,从左到右依次走到头(每个类只运行1次,继承object的类在所有继承该类的子类都运行结束的时候在运行)

    代码

    # 实现创建或查看老师和学生,没有健壮性
    import hashlib
    import pickle
    import os
    import da
    
    class prople():
        def __init__(self, name, age, sex):
            self.name = name
            self.age = age
            self.sex = sex
            self.found_time = datetime.datetime.now()
            num = hashlib.md5()
            num.update(f'{self.name}{str(self.age)}{str(self.sex)}'.encode('utf-8'))
            self.num =num.hexdigest()
        def all_info(self):
            return f'创建时间;{self.found_time},姓名;{self.name},年龄;{str(self.age)},性别;{self.sex}'
        def save(self):
            with open(f'{self.number}.pkl','wb') as fw:
                pickle.dump(self,fw)
                return '创建成功'
    
    class Teacher(prople):
        def __init__(self, name, age, sex, rank, wage):
            super().__init__(name, age, sex)
            self.rank = rank
            self.wage = wage
            self.number = f'T{self.num}'
        def tall_info(self):
            return f'{self.all_info()},等级;{self.rank},工资;{self.wage},编号;{self.number}'
    
    class Student(prople):
        def __init__(self, name, age, sex, course, money):
            super().__init__(name, age, sex)
            self.course = course
            self.money = money
            self.number = f'S{self.num}'
        def tall_info(self):
            return f'{self.all_info()},课程;{self.course},学费;{self.money},编号;{self.number}'
    
    
    def get_info(id):
        if os.path.exists(f'{id}.pkl'):
            with open(f'{id}.pkl','rb')as fr:
                data=pickle.load(fr)
            return data
    
    def found():
        while True:
            print('''
            1 老师
            2 学生
            输入选择;
            ''')
            choice = input()
            if choice == 'q':
                break
            name = input('名字;')
            age = int(input('年龄;'))
            sex = input('性别;')
            if choice == '1':
                rank = int(input('等级;'))
                wage = int(input('工资;'))
                num = hashlib.md5()
                num.update(f'{name}{age}{sex}'.encode('utf-8'))
                tid = f'T{num.hexdigest()}'
                if get_info(tid):
                    print('该角色已创建')
                    continue
                T = Teacher(name, age, sex, rank, wage)
                msg = T.save()
                print(msg)
                break
            elif choice == '2':
                course = int(input('课程;'))
                money = int(input('学费;'))
                num = hashlib.md5()
                num.update(f'{name}{age}{sex}'.encode('utf-8'))
                tid = f'S{num.hexdigest()}'
                if get_info(tid):
                    print('该角色已创建')
                    continue
                T = Teacher(name, age, sex, course, money)
                msg = T.save()
                print(msg)
                break
    def get_it():
        while True:
            choice = input('''
            T 老师
            S 学生
            输入选择;
            ''')
            if choice == 'q':
                break
            name = input('名字;')
            age = int(input('年龄;'))
            sex = input('性别;')
            num = hashlib.md5()
            num.update(f'{name}{age}{sex}'.encode('utf-8'))
            tid = f'{choice}{num.hexdigest()}'
            print(tid)
            if not get_info(tid):
                print('没有该角色')
                continue
            fd = get_info(tid)
            print(fd.tall_info())
            break
    def run():
        while True:
            choice = input('''
            1 创建角色
            2 查看角色
            输入选择;
            ''')
            if choice=='q':
                break
            if choice=='1':
                found()
            elif choice=='2':
                get_it()
    if __name__ == '__main__':
        run()
    
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  • 原文地址:https://www.cnblogs.com/luocongyu/p/11650304.html
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