day14 - 类和对象(作业)
2018-11-22 本文已影响0人
未醒的梦_19b0
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()
