day14 - 类和对象(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门科目中最高的分数。get_course()
讲解：用一个字典类存成绩

class Grade(object):
    def __init__(self, chinese:int, math, english):
        self.chinese = chinese
        self.math = math
        self.english = english

    def get_best_grade(self):
        all_score = list(self.__dict__.values())
        return max(all_score)


class Students(object):
    def __init__(self, name, age, grade=Grade(0, 0, 0)):
        self.name = name
        self.age = age
        self.grade = grade

    def getname(self):
        return self.name

    def getage(self):
        return self.age

    def get_course(self):
        return self.grade.get_best_grade()


stu1 = Students('小明', 18, Grade(chinese=80, math=90, english=95))
print(stu1.get_course())

class Student(object):
    def __init__(self, name, age, score):
        self.name = name
        self.age = age
        self.score = score

    def getname(self):
        return self.name

    def getage(self):
        return self.age

    def get_course(self):
        return max(self.score)


stu1 = Student('tom', 18, [90, 95, 98])
print(stu1.getname())
print(stu1.getage())
print(stu1.get_course())

1.建立一个汽车类Auto，包括轮胎个数，汽车颜色，车身重量，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 汽车能够加速 减速 停车。 再定义一个小汽车类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(object):

    def __init__(self, color='白色', weight=0):
        self.tyre = 4
        self.color = color
        self.weight = weight
        self.speed = 0

    def add_speed(self, speed: int):
        if self.speed + speed >= 240:
            print('您已超速！')
            self.speed = 240
            return
        self.speed += speed

    def sub_speed(self, speed: int):
        if self.speed - speed < 0:
            self.speed = 0
            return
        self.speed -= speed

    def stop(self):
        self.speed = 0


class CarAuto(Auto):
    def __init__(self, color='', weight=0, air_conditioning='', cd=''):
        super().__init__(color, weight)
        self.air_conditioning = air_conditioning
        self.cd = cd

    def add_speed(self, speed: int):
        if self.speed + speed >= 260:
            print('您已超速！')
            self.speed = 240
            return
        self.speed += speed

    def sub_speed(self, speed: int):
        if self.speed - speed < 0:
            print('已经熄火！')
            self.speed = 0
            return
        self.speed -= speed

class Auto(object):
    def __init__(self, count, color, weight, speed):
        self.count = count
        self.color = color
        self.weight = weight
        self.speed = speed

    def add_speed(self):
        return self.speed + 1

    def delete_speed(self):
        return self.speed - 1

    def stop_car(self):
        return self.speed == 0


a1 = Auto(5, '白色', '3t', 200)
# 再定义一个小汽车类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 CarAuto(Auto):
    def __init__(self, *args, air, cd):
        super().__init__(*args)
        self.air = air
        self.cd = cd

    def add_speed(self):
        self.speed += 2
        return self.speed

    def delete_speed(self):
        self.speed -= 2
        return self.speed


c1 = CarAuto(3, '白色', '2t', 200, air='格力', cd='VCD')
print(c1.count)
print(c1.speed)
print(c1.add_speed())
print(a1.add_speed())
print(a1.add_speed())
print(a1.delete_speed())
print(c1.color)
print(c1.delete_speed())

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(object):

    def __init__(self, firstname, lastname):
        self.firstname = firstname
        self.lastname = lastname

    def describeuser(self):
        print('%s:用户信息摘要'%(self.firstname + self.lastname))

    def greatuser(self):
        print('%s,你好！' % (self.firstname + self.lastname))
#
# 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 Admin(User):
    def __init__(self, firstname, lastname, privieges):
        super().__init__(firstname, lastname)
        self.privileges = privieges

    def show_privileges(self):
        return self.privileges


admin1 = User('zhang','san')
admin2 = Admin('li', 'si', ['can add post', 'can delete post', 'can ban user'])
admin1.describeuser()
admin1.greatuser()
print(admin2.show_privileges())

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(object):
    count = 0

    def __init__(self):
        Person.count += 1
        

p1 = Person()
p1 = Person()
p3 = Person()
p4 = Person()
p5 = Person()
p6 = Person()
p7 = Person()
p8 = Person()
print(Person.count)

(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]天马行空的生涯 [00:16.53]你的心了无牵挂 02:11.27[00:21.95]穿过幽暗地岁月 02:16.51[00:26.83]也曾感到彷徨 02:21.81[00:32.30]当你低头地瞬间 02:26.79[00:37.16]才发觉脚下的路 02:32.17心中那自由地世界 02:37.20如此的清澈高远 02:42.32盛开着永不凋零 02:47.83蓝莲花

def get_lyrics(time, song_name):
    pass

class Lyrics(object):
    """歌词类"""
    def __init__(self, time: float, text: str):
        self.time = time
        self.text = text.replace('\n', '')

    def __gt__(self, other):
        return self.time > other.time

    def __repr__(self):
        return '%.2f:%s' % (self.time, self.text)


class LyricsAnalyzer(object):
    """歌词解析类"""
    def __init__(self, song):
        self.__song = song
        self.__all_lyrics = []

    def __analysis_line(self, line):
        # 在这儿处理文件中的每一行的内容
        lines = line.split(']')
        # 创建歌词对象
        text = lines[-1]
        for time_str in lines[:-1]:
            fen = float(time_str[1:3])
            miao = float(time_str[4:])
            time = fen * 60 + miao
            lyrics = Lyrics(time, text)
            self.__all_lyrics.append(lyrics)

    def __annlysis_file(self):
        """解析歌词文件"""
        try:
            with open('lyricsfiles/%s.txt' % (self.__song), 'r',encoding='utf-8') as f:
                line = f.readline()
                while line:
                    self.__analysis_line(line)
                    line = f.readline()
        except FileNotFoundError:
            pass
            # print('没有歌词!')

    def get_lyrics(self, time):
        """
        根据当前时间获取对应歌词
        :param time: 时间(s)
        :return: 歌词
        """
        if not self.__all_lyrics:
            # 1.解析歌词文件
            self.__annlysis_file()
            # 2.根据时间对歌词进行排序
            self.__all_lyrics.sort(reverse=True)
            if not self.__all_lyrics:
                return '[没有歌词!]'
            # print(self.__all_lyrics)
            # 3.根据时间找词
        for lyrics in self.__all_lyrics:
            if lyrics.time <= time:
                return lyrics.text


la1 = LyricsAnalyzer('蓝莲花')
print(la1.get_lyrics(10))
print(la1.get_lyrics(100))
print(la1.get_lyrics(132))
print(la1.get_lyrics(140))
la2 = LyricsAnalyzer('夜曲')
print(la2.get_lyrics(40))

class ShowSong(object):
    def __init__(self):
        self._ms = 0

    def show_song(self):
        ms1 = float(input('时间：'))
        with open('1.txt', encoding='utf-8')as f:
            line1 = f.read()
            line2 = line1.split('\n')
            for i in range(len(line2) - 1):
                line3 = line2[i][1:].split(']')
                line5 = line2[i + 1][1:].split(']')
                # print(line3[0], line3[1])
                line4 = line3[0].split(':')
                line6 = line5[0].split(':')
                ms = float(line4[0]) * 60 + float(line4[1])
                ms2 = float(line6[0]) * 60 + float(line6[1])
                if ms <= ms1 < ms2:
                    print(line3[1])
            else:
                print('蓝莲花')



show1 = ShowSong()
show1.show_song()