Python教材第九章部分习题

教材：《Python编程从入门到实践》

9-3：用户

#9-3 Users
class User():
    def __init__(self, first, last):
        self.first_name = first
        self.last_name = last
        self.level = 1

    def describe_user(self):
        print("User: " + self.first_name + " " + self.last_name)
        print("level: " + str(self.level))

    def greet_user(self):
        print("welcome back, " + self.first_name + " " + self.last_name)


DisguisedToast = User("Jeremy", "Wang")
xChocobars = User("Janet", "Rosee")

DisguisedToast.describe_user()
DisguisedToast.greet_user()

xChocobars.describe_user()
xChocobars.greet_user()

输出：

User: Jeremy Wang
level: 1
welcome back, Jeremy Wang
User: Janet Rosee
level: 1
welcome back, Janet Rosee

9-5：尝试登陆次数

#9-3 Login times
class User():
    def __init__(self, first, last):
        self.first_name = first
        self.last_name = last
        self.level = 1
        self.login_attempts = 0

    def describe_user(self):
        print("User: " + self.first_name + " " + self.last_name)
        print("level: " + str(self.level))

    def greet_user(self):
        print("welcome back, " + self.first_name + " " + self.last_name)

    def increment_login_attempts(self):
        self.login_attempts += 1

    def reset_login_attempts(self):
        self.login_attempts = 0


DisguisedToast = User("Jeremy", "Wang")
for i in range(3):
    DisguisedToast.increment_login_attempts()
    print(DisguisedToast.login_attempts)
DisguisedToast.reset_login_attempts()
print(DisguisedToast.login_attempts)

输出：

9-7：管理员

#9-7 Administrator
class User():
    def __init__(self, first, last):
        self.first_name = first
        self.last_name = last
        self.level = 1
        self.login_attempts = 0

    def describe_user(self):
        print("User: " + self.first_name + " " + self.last_name)
        print("level: " + str(self.level))

    def greet_user(self):
        print("welcome back, " + self.first_name + " " + self.last_name)

    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, last):
        super().__init__(first, last)
        self.privileges = ['can add post', 'can delete post', 'can ban user']

    def show_privileges(self):
        for privilege in self.privileges:
            print(privilege)


DisguisedToast = Admin("Jeremy", "Wang")
DisguisedToast.show_privileges()

输出：

can add post
can delete post
can ban user

Python教材第九章部分习题

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