9-5

class User():

    def __init__(self,first_name,last_name,other):
        self.first_name = first_name
        self.last_name = last_name
        self.other = other
        self.login_attempts = 0

    def describe_user(self):
        print(self.first_name,self.last_name,self.other)

    def greet_user(self):
        print('Hello,'+ self.first_name + ' ' + self.last_name)

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

    def reset_login_attempts(self):
        self.login_attempts = 0

user = User('cao','feng','yanan')
user.describe_user()
user.greet_user()
user.increment_login_attempts()
print(user.login_attempts)
user.increment_login_attempts()
user.increment_login_attempts()
print(user.login_attempts)
user.reset_login_attempts()
print(user.login_attempts)