day14 作业

0.定义⼀个学⽣类。有属性：姓名、年龄、成绩（语⽂，数学，英语)[每课成绩的类型为整数]
⽅法： a. 获取学⽣的姓名：getname() b. 获取学⽣的年龄：getage()
c. 返回3⻔科⽬中最⾼的分数。get_course()

class Student:
    """学生类"""
    def __init__(self, name, age):
        self.name = name
        self.age = age
        self.scores = {'chinese': 80, 'math': 85, 'english': 75}

    def get_name(self):
        return self.name

    def get_age(self):
        return self.age

    def get_course(self):
        max_score = self.scores['chinese']
        for score in self.scores.values():
            if max_score < score:
                max_score = score
        return max_score


if __name__ == '__main__':
    joe = Student('jerry', 18)
    print(joe.get_name())
    print(joe.get_age())
    print(joe.get_course())

结果：

jerry
18
85

1.建⽴⼀个汽⻋类Auto，包括轮胎个数，汽⻋颜⾊，⻋身重量，速度等成员变量，并通过不同的构造⽅法创
建实例。⾄少要求 汽⻋能够加速 减速 停⻋。 再定义⼀个⼩汽⻋类CarAuto 继承Auto 并添加空调、CD等成
员变量 覆盖加速 减速的⽅法

class Auto:
    """汽车类"""
    def __init__(self, wheels=4, color='', weight=100, speed=0):
        self.wheels = wheels
        self.color = color
        self.weight = weight
        self.speed = speed

    def speed_up(self, speed):
        self.speed += speed

    def slow_down(self, speed):
        if self.speed > speed:
            self.speed -= speed
        else:
            self.speed = 0
            print('减不下去了')

    def stop(self):
        self.speed = 0


class CarAuto(Auto):
    """小汽车类"""
    def __init__(self, wheels=4, color='', weight=100, speed=0, ac='', cd=''):
        super().__init__(wheels, color, weight, speed)
        self.ac = ac
        self.cd = cd

    def speed_up(self, speed):
        self.speed += speed

    def slow_down(self, speed):
        if self.speed > speed:
            self.speed -= speed
        else:
            self.speed = 0
            print('减不下去了')

    def stop(self):
        self.speed = 0


if __name__ == '__main__':
    pass

2.创建⼀个名为User 的类，其中包含属性firstname 和lastname ，还有⽤户简介通常会存储的其他⼏个属
性。在类User 中定义⼀个名 为describeuser() 的⽅法，它打印⽤户信息摘要;再定义⼀个名为greetuser() 的
⽅法，它向⽤户发出个性化的问候。
管理员是⼀种特殊的⽤户。编写⼀个名为Admin 的类，让它继承User类。添加⼀个名为privileges 的属性，
⽤于存储⼀个由字符串(如"can add post"、"can delete post"、"can ban user"等)组成的列表。编写⼀个名为
show_privileges()的⽅法，它显示管理员的权限。创建⼀个Admin 实例，并调⽤这个⽅法。

class User:
    """用户类"""
    def __init__(self, first_name, last_name, description, hometown):
        self.first_name = first_name
        self.last_name = last_name
        self.description = description
        self.hometown = hometown

    def describe_user(self):
        return '我是%s%s,来自%s,%s' % (self.last_name, self.first_name, self.hometown, self.description)


class Admin(User):
    """管理员类"""
    def __init__(self, first_name, last_name, description, hometown, privilege=''):
        super().__init__(first_name, last_name, description, hometown)
        self.privilege = privilege

    def show_privileges(self):
        return '%s' % self.privilege


if __name__ == '__main__':
    pass

3.创建⼀个Person类，添加⼀个类字段⽤来统计Perosn类的对象的个数

class Person:
    """人类"""

    all_person = []

    def __init__(self, name, age, sex):
        self.name = ''
        self.age = 0
        self.sex = ''

    @classmethod
    def add_person(cls):
        name = input('name:')
        age = input('age:')
        sex = input('sex:')

        person = Person(name, age, sex)
        cls.all_person.append(person)


if __name__ == '__main__':
    pass

(尝试)5.写⼀个类，其功能是：1.解析指定的歌词⽂件的内容 2.按时间显示歌词 提示：歌词⽂件的内容⼀般
是按下⾯的格式进⾏存储的。歌词前⾯对应的是时间，在对应的时间点可以显示对应的歌词
[00:00.20]蓝莲花
[00:00.80]没有什么能够阻挡
[00:06.53]你对⾃由地向往
[00:11.59]天⻢⾏空的⽣涯
[00:16.53]你的⼼了⽆牵挂
[02:11.27][01:50.22][00:21.95]穿过幽暗地岁⽉
[02:16.51][01:55.46][00:26.83]也曾感到彷徨
[02:21.81][02:00.60][00:32.30]当你低头地瞬间
[02:26.79][02:05.72][00:37.16]才发觉脚下的路
[02:32.17][00:42.69]⼼中那⾃由地世界
[02:37.20][00:47.58]如此的清澈⾼远
[02:42.32][00:52.72]盛开着永不凋零
[02:47.83][00:57.47]蓝莲花

import pygame
lyrics = {'蓝莲花': [1], '没有什么能够阻挡': [3], '你对⾃由地向往': [5, 9], '天⻢⾏空的⽣涯': [6, 10]}


class Lyric:
    """歌词类"""

    song = []

    def __init__(self, lyric, time):
        self.lyric = lyric
        self.time = time

    @classmethod
    def add_lyric(cls, lyrics):
        for lyric,time in lyrics.items():
            instance = Lyric(lyric, time)
            cls.song.append(instance)

    @classmethod
    def play_lyric(cls):
        timer = 0
        is_play = cls.song[0].lyric
        while True:
            is_print = False
            for lyric in cls.song:
                if timer in lyric.time:
                    is_play = lyric.lyric
                    is_print = True
            if is_print:
                print(is_play)
            pygame.time.delay(1000)
            timer += 1

            if timer == 10:
                break

    @classmethod
    def find_lyric(cls, time):
        timer = time
        is_play = ''
        is_print = False
        flag = False
        for _ in range(time, 0, -1):
            for lyric in cls.song:
                if timer in lyric.time:
                    is_play = lyric.lyric
                    is_print = True
                    flag = True
            if flag:
                break
            timer -= 1
        if is_print:
            print(is_play)


if __name__ == '__main__':
    Lyric.add_lyric(lyrics)
    Lyric.play_lyric()
    print('-'*20)
    Lyric.find_lyric(8)

结果：

蓝莲花
没有什么能够阻挡
你对⾃由地向往
天⻢⾏空的⽣涯
你对⾃由地向往
--------------------
天⻢⾏空的⽣涯