day14-作業(yè)
1. 聲明?個電腦類: 屬性:品牌、顏色峦椰、內(nèi)存大小 方法:打游戲龄寞、寫代碼、看視頻汤功,a.創(chuàng)建電腦類的對象物邑,然后通過對象點的方式獲取、修改冤竹、添加和刪除它的屬性拂封,b.通過attr相關方法去獲取、修改鹦蠕、添加和刪除它的屬性
class Computer:
def __init__(self, brand, color, memory):
self.brand = brand
self.color = color
self.memory = memory
def games(self):
return '%s適合打游戲' % self.brand
def code(self):
return '%s適合寫代碼' % self.brand
def video(self):
return '%s適合看視頻' % self.brand
# a.
computer1 = Computer('神舟', '黑色', '32G')
# 獲取
print(computer1.brand)
# 修改
computer1.color = '白色'
print(computer1.color)
# 添加
computer1.price = 7000
print(computer1.price)
# 刪除
del computer1.memory
# b.
computer2 = Computer('蘋果', '白色', '256G')
# 獲取
print(getattr(computer2, 'brand'))
# 修改
setattr(computer2, 'color', '黑色')
print(computer2.color)
# 添加
setattr(computer2, 'price', 8900)
print(computer2.price)
# 刪除
delattr(computer2, 'memory')
2. 聲明一個人的類和狗的類:狗的屬性:名字冒签、顏色、年齡;狗的方法:叫喚;人的屬性:名字钟病、年齡萧恕、狗;人的方法:遛狗;a.創(chuàng)建人的對象小明,讓他擁有一條狗大黃肠阱,然后讓小明去遛大黃
class Dog:
def __init__(self, name, color, age):
self.name = name
self.color = color
self.age = age
def shout(self):
return '%s在叫你' % self.name
class Person:
def __init__(self, name, age, dog):
self.name = name
self.age = age
self.dog = Dog(dog.name, dog.color, dog.age)
def walk_dog(self):
return '%s遛%s' % (self.name, self.dog.name)
p1 = Person('小明', 22, Dog('大黃', '黃色', 22))
print(p1.walk_dog())
3. 聲明一個圓類票唆,自己確定有哪些屬性和方法
class Circle:
pai = 3.14
def __init__(self, rad):
self.radius = rad
# 計算圓的面積
def area(self):
return '面積:%.2f' % (self.pai * self.radius ** 2)
# 計算圓的周長
def girth(self):
return '周長:%.2f' % (2 * self.radius * self.pai)
c1 = Circle(10)
print(c1.girth())
print(c1.area())
4. 創(chuàng)建一個學生類:屬性:姓名,年齡屹徘,學號;方法:答到走趋,展示學生信息;創(chuàng)建一個班級類:屬性:學生,班級名;方法:添加學生噪伊,刪除學生簿煌,點名, 求班上學生的平均年齡
class Students:
count = 0
def __init__(self, name, age):
self.count += 1
self.name = name
self.age = age
self.study_id = 'stu' + str(self.count).zfill(3)
# 答到
@staticmethod
def answer(name):
return '%s到' % name
# 展示學生信息
def stu_print(self):
return '<name:%s,age:%d,study_id:%s>' % \
(self.name, self.age, self.study_id)
class Classes:
classes = []
def __init__(self, stu, name):
# self.students = Students(stu.name, stu.age)
self.student = {'name': stu.name, 'age': stu.age, 'study_id': stu.study_id}
self.name = name
self.classes.append(self.student)
# 添加學生
def add_stu(self, stu):
self.student = {'name': stu.name, 'age': stu.age, 'study_id': stu.study_id}
self.classes.append(self.student)
# 刪除學生
def del_stu(self, name):
for stu in self.classes:
if name == stu['name']:
self.student = stu
self.classes.remove(self.student)
break
else:
print('沒有該學生')
# 點名
def call_name(self, name):
for stu1 in self.classes:
print('========', stu1)
if name == stu1['name']:
# self.student = name
return Students.answer(name)
else:
return '沒有該學生'
# 求平均年齡
def avg_age(self):
sum1 = 0
count = 0
for stu in self.classes:
sum1 += stu['age']
count += 1
return int(sum1 / count)
# 創(chuàng)建班級對象
class1 = Classes(Students('小明', 22), 'python')
# 添加學生
class1.add_stu(Students('小花', 18))
print(class1.classes)
# 求平均年齡
print(class1.avg_age())
# 刪除學生
class1.del_stu('小花')
print(class1.classes)
# 點名
print(class1.call_name('小明'))
# print(class1.student.stu_print())
最后編輯于 :
?著作權(quán)歸作者所有,轉(zhuǎn)載或內(nèi)容合作請聯(lián)系作者