day015 作业 08-02
2018-08-02 本文已影响0人
Yehao_
1.定义一个学生类。
有属性：姓名、年龄、成绩（语文，数学，英语）[每科成绩的类型为整型]
有方法：
- a.获取学生姓名：get_name()
- b.获取学生年龄：get_age()
- c.返回3门科目中最高的分数。get_course()
class Student:
def __init__(self, name, age, chinese, math, english):
self.name = name
self.age = age
self.score = {'Chinese': chinese,
'Math': math,
'English': english,
}
def get_name(self):
return self.name
def get_age(self):
return self.age
def get_course(self):
return max(self.score['Chinese'], self.score['Math'], self.score['English'])
if __name__ == '__main__':
s1 = Student('A', 12, 55, 66, 77)
max_score = s1.get_course()
print(max_score)
- 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。至少要求汽车能顾加速、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、减速方法。
class Auto:
def __init__(self, wheel_num, color, weight, speed):
self.wheel_num = wheel_num
self.color = color
self.weight = weight
self.speed = speed
def speed_up(self):
self.speed += 1
def speed_down(self):
self.speed -= 1
def stop(self):
self.speed = 0
class CarAuto(Auto):
def __init__(self, color, weight, speed):
super().__init__(wheel_num=4, color=color, weight=weight, speed=speed)
self.air_condition = ''
self.CD = ''
def speed_up(self):
self.speed += 5
def speed_down(self):
self.speed -= 5
3.创建一个User类，包含first_name、last_name和用户简介。在类User中定义一个名为describe_user()的方法，它打印用户信息摘要；再定义一个名为greet_user()的方法，它向用户发出个性化的问候。
编写一个Admin类，继承User类。添加一个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并调用这个方法。
class User:
def __init__(self, first_name, last_name, abstract=''):
self.first_name = first_name
self.last_name = last_name
self.abstract = abstract
def describe_user(self):
print(self.abstract)
def greet_user(self):
print('%s %s,你好' % (self.first_name, self.last_name))
class Admin(User):
privileges = ['can add post', 'can delete post', 'can ban user']
@classmethod
def show_privileges(cls):
print(*cls.privileges)
if __name__ == '__main__':
admin = Admin('Kobe', 'Bryant', 'A basketball player.')
admin.show_privileges()
4.创建一个Person类，添加一个类字段用来统计Person类的对象的个数。
class Person:
numbers = 0
def __init__(self, name, age, sex):
Person.numbers += 1
self.name = name
self.age = age
self.sex = sex
@classmethod
def number(cls):
return cls.numbers
if __name__ == '__main__':
p1 = Person('a', 12, 'Male')
p2 = Person('b', 13, 'Female')
print(Person.number())
