# 9-1 餐馆
class Restaurant():
def __init__(self, restaurant_name, cuisine_type):
self.restaurant_name = restaurant_name
self.cuisine_type = cuisine_type
def describe_restaurant(self):
print("Restaurant name is " + self.restaurant_name + ".")
print("Cuisine type is " + self.cuisine_type + ".")
def open_restaurant(self):
print("The restaurant is open.")
restaurant = Restaurant("全聚德", "Peking duck")
print(restaurant.restaurant_name, restaurant.cuisine_type)
restaurant.describe_restaurant() # 记得括号
restaurant.open_restaurant() # 记得括号
# 9-2 三家餐馆
dadong = Restaurant("北京大董", "Duck")
yinxing = Restaurant("成都银杏南亭", "川、粤、西餐")
weizhuang = Restaurant("味庄", "杭帮菜")
dadong.describe_restaurant()
yinxing.describe_restaurant()
weizhuang.describe_restaurant()
# 9-3 用户
class User():
def __init__(self, first_name, last_name, **kw):
self.first_name = first_name
self.last_name = last_name
self.kw = kw
def decribe_user(self):
print("first name: " + self.first_name.title() + ", last name: " +
self.last_name.title() + ", others: " + str(self.kw))
def greet_user(self):
print("This is a personalized greeting, " + self.first_name.title())
zhou = User('zhou', 'kai', girl_friend='Zhang Lili', birth_place='Chenzhou')
zhang = User('zhang', 'lili', boy_friend='Zhou Kai', birth_place='Dezhou')
zhou.decribe_user()
zhou.greet_user()
zhang.decribe_user()
zhang.greet_user()
# 9-4 就餐人数
class Restaurant():
def __init__(self, restaurant_name, cuisine_type):
self.restaurant_name = restaurant_name
self.cuisine_type = cuisine_type
self.number_served = 0
def describe_restaurant(self):
print("Restaurant name is " + self.restaurant_name + ".")
print("Cuisine type is " + self.cuisine_type + ".")
print("This restaurant has a total of " + str(self.number_served) +
" people to eat.")
def open_restaurant(self):
print("The restaurant is open.")
# def set_number_served(self, number): # 添加方法一
# print("Number of meals: " + str(number) + ".")
# def increment_number_served(self, add_number): # 添加方法二
# self.number_served += add_number
restaurant = Restaurant("全聚德", "Peking duck")
restaurant.describe_restaurant()
restaurant.number_served = 10
restaurant.describe_restaurant()
# 9-5 尝试登陆次数
class User():
def __init__(self, first_name, last_name, **kw):
self.first_name = first_name
self.last_name = last_name
self.login_attempts = 0
self.kw = kw
def decribe_user(self):
print("first name: " + self.first_name.title() + ", last name: " +
self.last_name.title() + ", others: " + str(self.kw))
def greet_user(self):
print("This is a personalized greeting, " + self.first_name.title())
def increment_login_attempts(self):
self.login_attempts += 1
def reset_login_attempts(self):
self.login_attempts = 0
admin = User('zhou', 'kai')
admin.increment_login_attempts()
admin.increment_login_attempts()
admin.increment_login_attempts()
admin.increment_login_attempts()
print(admin.login_attempts)
admin.reset_login_attempts()
print(admin.login_attempts)
# 9-6 冰淇淋小店
# 父类
class Restaurant():
def __init__(self, restaurant_name, cuisine_type):
self.restaurant_name = restaurant_name
self.cuisine_type = cuisine_type
self.number_served = 0
def describe_restaurant(self):
print("Restaurant name is " + self.restaurant_name + ".")
print("Cuisine type is " + self.cuisine_type + ".")
print("This restaurant has a total of " + str(self.number_served) +
" people to eat.")
def open_restaurant(self):
print("The restaurant is open.")
# 子类
class IceCreamStand(Restaurant):
def __init__(self, restaurant_name, cuisine_type, flavors):
super().__init__(restaurant_name, cuisine_type)
for i in flavors:
print(i)
# 9-7 管理员
# 父类
class User():
def __init__(self, first_name, last_name):
self.first_name = first_name
self.last_name = last_name
def decribe_user(self):
print("first name: " + self.first_name.title() + ", last name: " +
self.last_name.title())
def greet_user(self):
print("This is a personalized greeting, " + self.first_name.title())
# 子类
class Admin(User):
def __init__(self, first_name, last_name):
super().__init__(first_name, last_name)
self.privileges = Privileges()
list1 = ["can add post", "can delete post", "can ban user"]
admin = Admin('zhou', 'kai', list1, age=20)
admin.show_privileges()
# 9-8 权限
class Privileges():
def __init__(self, privileges=["can add post", "can delete post", "can ban user"]):
privi = []
for x in privileges:
privi.append(x)
def show_privileges(self):
print("You have all authority in User.")
# 9-9 电瓶升级
# 书中代码一
class Car():
def __init__(self, make, model, year):
self.make = make
self.model = model
self.year = year
self.odometer_reading = 0
def get_descriptive_name(self):
long_name = str(self.year) + ' ' + self.make + ' ' + self.model
return long_name.title()
def read_odometer(self):
print("This car has " + str(self.odometer_reading) + " miles on it.")
def update_odometer(self, mileage):
if mileage >= self.odometer_reading:
self.odometer_reading = mileage
else:
print("You can't roll back an odometer!")
def increment_odometer(self, miles):
self.odometer_reading += miles
# 书中代码二
class Battery():
def __init__(self, battery_size=70):
self.battery_size = battery_size
def describe_bettery(self):
print("This ca has a " + str(self.battery_size) + "-kWh battery.")
def get_range(self):
if self.battery_size == 70:
range = 240
elif self.battery_size == 85:
range = 270
def upgrade_battery(self):
if self.battery_size != 85:
self.battery_size = 85
message = "This car can go approximately " + str(range)
message += " miles on a full charge."
print(message)
# 书中代码三
class ElectricCar(Car):
def __init__(self, make, model, year):
super().__init__(make, model, year)
self.battery_size = Battery()
def describe_battery(self):
print("This car has a " + str(self.battery_size) + "-kWh battery.")
# 9-14 骰子
from random import randint
class Die():
def __init__(self):
self.sides = 6
def roll_die(self):
y = []
for i in range(10):
y.append(randint(1, self.sides))
print(y)
die = Die()
die.roll_die()
die.sides = 10 # 10面
die.roll_die()
die.sides = 20 # 20面
die.roll_die()
