Python编程:从入门到实践的动手试一试答案(第九章)
2017-11-01 20:12
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#9-1 餐馆 class Restaurant(): def __init__(self,restaurant_name,cuisine_type): self.name = restaurant_name self.type = cuisine_type def describe_restaurant(self): print("Restaurant's name is " + self.name.title() ) print("Cuisine type is " + self.type.title()) def open_restaurant(self): print('In operation') my_restaurant = Restaurant('金拱门','快餐') my_restaurant.describe_restaurant() my_restaurant.open_restaurant()
#9-2 三家餐馆 class Restaurant(): def __init__(self,restaurant_name,cuisine_type): self.name = restaurant_name self.type = cuisine_type def describe_restaurant(self): print("Restaurant's name is " + self.name.title() ) print("Cuisine type is " + self.type.title()) def open_restaurant(self): print('In operation') my_restaurant1 = Restaurant('金拱门','快餐') my_restaurant2 = Restaurant('银拱门','中餐') my_restaurant3 = Restaurant('铜拱门','慢餐') my_restaurant1.describe_restaurant() my_restaurant2.describe_restaurant() my_restaurant3.describe_restaurant()
#9-3 用户 class User(): def __init__(self,first_name,last_name): self.first_name = first_name self.last_name = last_name def describe_user(self): print("First name is " + self.first_name.title() ) print("Last name is " + self.last_name.title()) def greet_user(self): full_name = self.first_name + ' ' + self.last_name print('Hello ' + full_name.title()) user1 = User('ergou','yang') user2 = User('qiqi','jiang') user1.describe_user() user1.greet_user() user2.describe_user() user2.greet_user()
#9-4 就餐人数 class Restaurant(): def __init__(self,restaurant_name,cuisine_type): self.name = restaurant_name self.type = cuisine_type self.number_served = 0 def describe_restaurant(self): print("Restaurant's name is " + self.name.title() ) print("Cuisine type is " + self.type.title()) print('How many people have dinner in the restaurant? ' + str(self.number_served)) def open_restaurant(self): print('In operation') def set_number_served(self,people): self.number_served = people def increment_number_served(self,people): self.number_served += people restaurant = Restaurant('金拱门','快餐') restaurant.describe_restaurant() restaurant.open_restaurant() restaurant.set_number_served(10) restaurant.describe_restaurant() restaurant.increment_number_served(3) restaurant.describe_restaurant()
#9-5 尝试登录次数 class User(): def __init__(self,first_name,last_name): self.first_name = first_name self.last_name = last_name self.login_attempts = 0 def describe_user(self): print("First name is " + self.first_name.title() ) print("Last name is " + self.last_name.title()) def greet_user(self): full_name = self.first_name + ' ' + self.last_name print('Hello ' + full_name.title()) def increment_login_attempts(self): self.login_attempts += 1 def reset_login_attempts(self): self.login_attempts = 0 user1 = User('ergou','yang') user1.describe_user() user1.increment_login_attempts() user1.greet_user() user1.increment_login_attempts() user1.increment_login_attempts() print(user1.login_attempts) user1.reset_login_attempts() print(user1.login_attempts)
#9-6 冰淇淋小店 class Restaurant(): def __init__(self,restaurant_name,cuisine_type): self.name = restaurant_name self.type = cuisine_type self.number_served = 0 def describe_restaurant(self): print("Restaurant's name is " + self.name.title() ) print("Cuisine type is " + self.type.title()) print('How many people have dinner in the restaurant? ' + str(self.number_served)) def open_restaurant(self): print('In operation') def set_number_served(self,people): self.number_served = people def increment_number_served(self,people): self.number_served += people class IceCreamStand(Restaurant): def __init__(self,restaurant_name,cuisine_type): super().__init__(restaurant_name,cuisine_type) self.flavors = ['apple','milk'] def show(self): print(self.flavors) restaurant = IceCreamStand('金拱门','快餐') restaurant.describe_restaurant() restaurant.show()
#9-7 管理员 class User(): def __init__(self,first_name,last_name): self.first_name = first_name self.last_name = last_name self.login_attempts = 0 def describe_user(self): print("First name is " + self.first_name.title() ) print("Last name is " + self.last_name.title()) def greet_user(self): full_name = self.first_name + ' ' + self.last_name print('Hello ' + full_name.title()) def increment_login_attempts(self): self.login_attempts += 1 def reset_login_attempts(self): self.login_attempts = 0 class Admin(User): def __init__(self,first_name,last_name): super().__init__(first_name,last_name) self.privileges = ["can add post" ,"can delete post" ,"can ban user"] def show_privileges(self): print(self.privileges) user = Admin('ergou','yang') user.show_privileges()
#9-8 权限 class Privileges(): def __init__(self): self.privileges = ["can add post" ,"can delete post" ,"can ban user"] def show_privileges(self): print(self.privileges) class User(): def __init__(self,first_name,last_name): self.first_name = first_name self.last_name = last_name self.login_attempts = 0 def describe_user(self): print("First name is " + self.first_name.title() ) print("Last name is " + self.last_name.title()) def greet_user(self): full_name = self.first_name + ' ' + self.last_name print('Hello ' + full_name.title()) def increment_login_attempts(self): self.login_attempts += 1 def reset_login_attempts(self): self.login_attempts = 0 class Admin(User): def __init__(self,first_name,last_name): super().__init__(first_name,last_name) self.privileges = Privileges() user = Admin('ergou','yang') user.privileges.show_privileges()
#9-9 9-10 9-11 9-12 略
#9-13 使用OrderedDict from collections import OrderedDict favorite_languages = OrderedDict() favorite_languages['jen'] = 'python' favorite_languages['sarah'] = 'c' favorite_languages['edward'] = 'ruby' favorite_languages['phil'] = 'python' for name, language in favorite_languages.items(): print(name.title() + "'s favorite language is " + language.title() + ".")
#9-14 骰子 from random import randint class Die(): def __init__(self): self.sides = 6 def roll_die(self): x = randint(1, self.sides) print(str(x)) die = Die() for x in range(0,10): die.roll_die() die.sides = 10 for x in range(0,10): die.roll_die() die.sides = 20 for x in range(0,10): die.roll_die()
#9-15 Python Module of the Week ...
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